This appeal marks the second time that Marvin Edward Johnson, a convict on Florida’s death row, has appeared before this court challenging his capital murder conviction and death sentence. In his first appeal, we found no constitutional error in the state court proceedings leading to his death sentence and affirmed the district court’s denial of his petition for a writ of habeas corpus. Johnson v. Wainwright (“Johnson I”), 806 F.2d 1479 (11th Cir.1986), cert. denied, 484 U.S. 872, 108 S.Ct. 205, 98 L.Ed.2d 157 (1987). In this appeal, he raises five claims: (1) that his sentencing hearing violated the Supreme Court’s admonitions in Hitchcock v. Dugger, 481 U.S. 393, 107 S.Ct. 1821, 95 L.Ed.2d 347 (1987), because the trial judge, in overriding the sentencing jury’s recommendation of life imprisonment, failed to consider nonstatutory mitigating evidence; (2) that his appellate counsel was ineffective in not challenging on direct appeal the denial of his motion to suppress an allegedly unreliable and suggestive photographic identification procedure; (3) that the Florida courts, by allowing the trial judge to override the jury’s life imprisonment recommendation in this case, have applied their reviewing standard in such a manner as to result in an arbitrary and capricious imposition of the death sentence; (4) that his trial counsel rendered ineffective assistance both by not ensuring that a proper mental health examination was conducted prior to his sentencing hearing and by failing to conduct any additional investigation during the time period between the hearing before the sentencing jury and the final hearing before the trial judge; and finally (5) that his trial counsel, by wholly failing to prepare a rebuttal to the state’s ballistic and crime-scene reconstruction evidence, was ineffective.
The district court, reviewing these claims without a hearing, denied Johnson’s petition for habeas relief. Although we agree with the district court’s resolution of most of the claims, we hold that a remand is necessary with respect to Johnson’s claim of ineffective assistance of counsel at sentencing.
I. PROCEDURAL BACKGROUND
In order to fully understand this court’s discussion of the various issues, particularly as they relate to the resolution of whether certain claims have been procedurally defaulted or constitute abuse of the writ, some detail of the procedural history of this case is necessary. On December 8, 1978, Johnson was convicted by a jury of first-degree murder and armed robbery.1 *445On December 9, the penalty phase commenced with a hearing before an advisory sentencing jury. This jury returned a recommendation of life imprisonment on the first-degree murder conviction. Approximately one month later, on January 12, 1979, a second hearing before the sentencing judge took place. At the close of this hearing, the trial judge overrode the advisory jury’s recommendation of life imprisonment and sentenced Johnson to death.2
Johnson appealed his conviction and death sentence to the Florida Supreme Court. In that appeal, he raised five issues.3 Of those five issues, one — whether the trial judge’s override of the advisory jury’s recommendation of life was inconsistent with the standards set forth in Ted-der v. State, 322 So.2d 908 (Fla.1975) — is also being raised during this appeal. On review of Johnson’s appeal, the Florida Supreme Court rejected Johnson’s claims attacking his conviction and his constitutional challenges to the Florida capital statute. Johnson v. State, 393 So.2d 1069 (Fla.1980), cert. denied, 454 U.S. 882, 102 S.Ct. 364, 70 L.Ed.2d 191 (1981). Although the Florida Supreme Court did set aside one of the aggravating circumstances found by the sentencing judge,4 the court, by a vote of four justices to three, affirmed the trial judge’s decision to override the jury’s sentencing recommendation.
Rather than seeking habeas relief in the state courts pursuant to Florida Rule Criminal Procedure 3.850,5 Johnson next petitioned the United States District Court for the Northern District of Florida for a writ of habeas corpus.6 During this proceeding, Johnson raised all of the issues raised on direct appeal and several new issues as well.7 Among the various issues he *446presented was a claim that the trial court did not abide by the Tedder standard and a claim that the trial court failed to consider nonstatutory mitigating circumstances. The district court denied the petition.
On appeal to this court, Johnson raised all but three of the claims presented to the district court. These three claims, which included the challenge to the trial judge’s application of the Tedder standard, were deemed abandoned.8 Johnson I, 806 F.2d at 1481 n. 5. The remaining claims were all addressed on their merits and rejected. See generally Johnson I, supra.
Johnson then returned to the Florida Supreme Court where he attempted to obtain a writ of habeas corpus and a stay of execution. During this proceeding he raised five issues, of which two — that the trial judge considered only statutory mitigating circumstances in violation of Hitchcock v. Dugger, 481 U.S. 393, 107 S.Ct. 1821, 95 L.Ed.2d 347 (1987), and that appellate counsel was ineffective in failing to appeal the denial of a motion to suppress a pretrial photographic identification — are relevant here.9 With two justices specially concurring, the Florida Supreme Court rejected all of these claims on their merits.10 Johnson v. Dugger (“Johnson II”), 523 So.2d 161 (Fla.1988).
Concurrently with the habeas proceedings, Johnson also filed a motion with the trial court for postconviction relief pursuant to Florida Rule of Criminal Procedure 3.850. Among the claims raised in this motion were allegations (1) that his trial counsel rendered ineffective assistance by failing to obtain an independent ballistics expert and (2) that his sentencing counsel rendered ineffective assistance by failing to develop and present available psychological evidence at sentencing. The Florida Supreme Court found that these claims had not been timely filed; consequently, the court, with two justices dissenting, ruled that they were procedurally barred.11 Johnson v. State ("Johnson III”), 536 So.2d 1009 (Fla.1988).
Johnson next sought relief in the instant case in federal district court. In that proceeding, Johnson raised the same five issues pending on this appeal. The district court rejected the merits of his Hitchcock claim and his claim that appellate counsel was ineffective. The district court did not reach the merits of Johnson’s other three claims, reasoning that his challenge to the jury override constituted an abuse of the *447writ and that his various claims of ineffective assistance of trial and sentencing counsel were procedurally barred.
II. THE HITCHCOCK CLAIM
Johnson argues that the Supreme Court’s recent decision in Hitchcock v. Dugger, 481 U.S. 393, 107 S.Ct. 1821, 95 L.Ed.2d 347 (1987), requires us to reconsider our earlier holding in Johnson I that the trial judge did not impermissibly limit his consideration of mitigating evidence to only those factors set forth in Fla.Stat. § 921.141(6). While we agree that Hitchcock “breathed new vitality into claims” raising the issue of whether the sentencing body was precluded from considering all mitigating evidence, Hargrave v. Dugger, 832 F.2d 1528, 1533 (11th Cir.1987) (in banc), cert. denied, — U.S. -, 109 S.Ct. 1353, 103 L.Ed.2d 821 (1989), we do not find that Hitchcock mandates a reversal in this case.
On his prior appeal, Johnson argued that the sentencing court refused to either consider or weigh nonstatutory mitigating circumstances. In evaluating this claim, the panel defined its task on review as follows: “we must determine whether there is any indication that the sentencing judge felt himself bound as a matter of law not to consider the mitigating circumstances offered by Johnson.” Johnson I, 806 F.2d at 1484. After examining the transcripts during the sentencing hearing and reviewing the trial judge’s comments both during the hearing and in his final order imposing death, the panel concluded that Johnson’s claim was without merit:
In the instant case there is no indication that the trial court felt itself legally bound not to consider the mitigating evidence presented by the defendant. It is true that Alford v. State, 307 So.2d 433 (Fla.1975), cert. denied, 428 U.S. 912, 96 S.Ct. 3227, 49 L.Ed.2d 1221 (1976), the case cited by the trial judge, limited the Florida courts in their consideration of nonstatutory circumstances. However, the trial court was also aware of and acted upon the decision in Songer v. State, 365 So.2d 696 (Fla.1978), cert. denied, 441 U.S. 956, 99 S.Ct. 2185, 60 L.Ed.2d 1060 (1979), which effectively overruled Alford. Moreover, the trial judge allowed Johnson to present evidence of all these mitigating circumstances to the jury for its consideration, Record on Appeal, vol. 9 at 1651, and expressly noted that he had not “disregarded any of the mitigating circumstances that were offered in evidence, either at the penalty phase or during the trial itself,” id. at 1767. For example, the sentencing judge expressly considered the proffered factor that Johnson did not kill everyone in the store. It is of no constitutional moment that the sentencing judge evaluated the factor as having little or no mitigating value.
Johnson I, 806 F.2d at 1484 (footnote omitted).
To assess the impact that the Supreme Court’s decision in Hitchcock has on this analysis, we must review Hitchcock in the context of both this court’s in banc opinion in that case and the Supreme Court decision reversing that opinion. In Hitchcock v. Wainwright, 770 F.2d 1514 (11th Cir.1985), the in banc court, after having determined that the petitioner had not been restricted in presenting mitigating evidence during the sentencing hearing, concluded that the petitioner was not denied an individualized sentencing hearing. In reversing this conclusion, the Supreme Court held that although the petitioner might have been afforded the opportunity to present mitigating evidence at the sentencing hearing, this fact, by itself, was not sufficient. Rather, a reviewing court’s inquiry must focus upon (1) whether/ in light of all the circumstances, the sentencing jury was instructed that it could consider all mitigating evidence, whether statutory or nonstat-utory, and (2) whether the sentencing judge actually did consider both statutory and nonstatutory evidence. Hitchcock, 481 U.S. at 397, 107 S.Ct. at 1824. See Boyde v. California, — U.S. -, 110 S.Ct. 1190, 1196, 108 L.Ed.2d 316 (1990) (“The Eighth Amendment requires that the jury be able to consider and give effect to all relevant mitigating evidence offered by petitioner.”); Jones v. Dugger, 867 F.2d 1277, 1279 *448(11th Cir.1989) (“The eighth amendment, which is applicable to the states through the fourteenth amendment, requires that a jury in a capital case not be precluded from considering, as a mitigating factor, any aspect of a defendant’s character or record that the defendant proffers as a basis for a sentence less than death.”) (emphasis in original).
In cases decided subsequent to Hitchcock, we have approached the issue of whether a defendant received an individualized sentencing hearing on a case-by-ease basis, looking to all of the surrounding circumstances. Delap v. Dugger, 890 F.2d 285, 304 (11th Cir.1989); Demps v. Dugger, 874 F.2d 1385, 1389 (11th Cir.1989), cert. denied, — U.S. -, 110 S.Ct. 1834, 108 L.Ed.2d 963 (1990); Knight v. Dugger, 863 F.2d 705, 708 (11th Cir.1988). In conducting this assessment, we have focused not on whether the defendant was allowed to present all mitigating evidence during the sentencing hearing, but rather on whether the sentencing jury and judge were free to, and actually did, consider any nonstatutory mitigating evidence that was presented.12 Delap v. Dugger, 890 F.2d at 304; Demps v. Dugger, 874 F.2d at 1389 & n. 9; Jones, 867 F.2d at 1280.
Admittedly, there is some language in Johnson I that suggests too much concentration upon the former consideration. See id. at 1484 (“ 'Our review is completed once it is established that a full hearing was conducted in which appellant’s counsel was given an opportunity to present all the mitigation evidence’ ”) (quoting Palmes v. Wainwright, 725 F.2d 1511, 1523 (11th Cir.), cert. denied, 469 U.S. 873, 105 S.Ct. 227, 83 L.Ed.2d 156 (1984)). It is clear, however, that the panel did not rely solely upon this ground. Instead, the panel also held that the sentencing judge understood the principle of Lockett v. Ohio, 438 U.S. 586, 98 S.Ct. 2954, 57 L.Ed.2d 973 (1978), and that the sentencing judge expressly stated that he was considering nonstat-utory as well as statutory mitigating circumstances. This assessment remains unaffected by Hitchcock.13
III. INEFFECTIVE ASSISTANCE OF APPELLATE COUNSEL
Petitioner asserts that his appellate counsel was ineffective for not challenging the trial court’s denial of his motion to suppress the in-court identification of the eyewitness, Gary Summitt. The Florida Supreme Court rejected this argument, holding that Johnson had demonstrated neither sub-standard performance nor prejudice. Johnson II, 523 So.2d at 163. Similarly, the district court, finding that appellate *449counsel’s performance was not deficient, rejected this claim.14
Pursuant to the fourteenth amendment, a criminal defendant has the right to receive assistance of counsel on a direct appeal of a state conviction. Douglas v. California, 372 U.S. 353, 83 S.Ct. 814, 9 L.Ed.2d 811 (1963). This right encompasses the entitlement to receive effective representation by counsel on direct appeal. Evitts v. Lucey, 469 U.S. 387, 105 S.Ct. 830, 83 L.Ed.2d 821 (1985); Alvord v. Wainwright, 725 F.2d 1282, 1291 (11th Cir.), cert. denied, 469 U.S. 956, 105 S.Ct. 355, 83 L.Ed.2d 291 (1984). In assessing whether a defendant actually received effective assistance of appellate counsel, the standard of review is the same standard used to evaluate the performance of trial counsel. Matire v. Wainwright, 811 F.2d 1430, 1435 (11th Cir.1987).
Thus, to bring a successful claim of ineffective assistance of appellate counsel, petitioner must prove both that his appellate counsel’s performance was deficient and that counsel's deficient performance prejudiced his defense. Strickland v. Washington, 466 U.S. 668, 687, 104 S.Ct. 2052, 2064, 80 L.Ed.2d 674 (1984); Matire v. Wainwright, 811 F.2d at 1435. Only when counsel performs in an objectively unreasonable manner that falls below the wide range of competence demanded of attorneys in criminal cases can it be said that counsel’s actions were deficient. Strickland v. Washington, 466 U.S. at 688, 104 S.Ct. at 2065; Cross v. United States, 893 F.2d 1287, 1290 (11th Cir.1990). This deficient performance leads to a finding of prejudice upon a showing that it is reasonably probable that the result of the proceedings would have been different absent counsel’s unprofessional errors.15 Strickland v. Washington, 466 U.S. at 694, 104 S.Ct. at 2068; Cross v. United States, 893 F.2d at 1290.
An assessment of either the alleged deficiency in appellate counsel’s performance or the resulting prejudice arising therefrom requires an initial evaluation of the merits of petitioner’s claims that the trial testimony concerning eyewitness Gary Summitt’s identification of a photograph of Johnson and Summitt’s own in-court identification of Johnson were both so unreliable as to violate due process. See Cross v. United States, 893 F.2d at 1290; Matire v. Wainwright, 811 F.2d at 1435. See also Funchess v. Wainwright, 772 F.2d 683, 695 (11th Cir.1985) (“the best way to evaluate this issue is to examine the alleged trial errors to see if they contain sufficient merit to justify faulting appellate counsel for not having raised them”), cert. denied, 475 U.S. 1031, 106 S.Ct. 1242, 89 L.Ed.2d 349 (1986). In other words, if the underlying motion to suppress was without merit, then Johnson cannot demonstrate either deficient performance or prejudice. We, therefore, proceed with an analysis of Johnson’s claim that the identification should have been suppressed.
The facts, as testified to during the suppression hearing, were uncontested.16 *450Within fifteen to thirty minutes of the offense, Summitt at least three times gave similar descriptions of the individual who committed the crime. He was then shown four photographs, three of Johnson and a fourth that did not meet his description. From the photographs, Summitt identified Johnson.
There is no question that the manner in which Summitt was presented with the photographs and made his identification was unduly suggestive. See Marsden v. Moore, 847 F.2d 1536, 1545 (11th Cir.) (procedure unduly suggestive when witness shown only three pictures — one of the defendant, one of the defendant and his wife, one of the defendant’s wife), cert. denied, 488 U.S. 983, 109 S.Ct. 534, 102 L.Ed.2d 566 (1988); Dobbs v. Kemp, 790 F.2d 1499, 1506 (11th Cir.1986) (photographic identification procedure unduly suggestive where one victim only shown four photographs of the defendant and other witness shown 12 photographs, four of which were of the defendant and two of which were of individuals of a different race), modified on reh’g, 809 F.2d 750 (11th Cir.), cert. denied, 481 U.S. 1059, 107 S.Ct. 2203, 95 L.Ed.2d 858 (1987). However, that fact in and of itself is not sufficient to constitute reversible error. Rather, in order to prove that eyewitness testimony identifying the defendant as the individual who committed the crime was so tainted as to be unreliable, Johnson must also establish that the officers’ actions in showing Summitt the photographs created a substantial risk of mis-identification. Dobbs v. Kemp, 790 F.2d at 1506; United States v. Cannington, 729 F.2d 702, 711 (11th Cir.1984). In other words, notwithstanding an unduly suggestive photograph identification procedure, testimony concerning an eyewitness’s identification of the defendant is admissible if, under all of the circumstances, the witness’s identification of the defendant is reliable. Manson v. Brathwaite, 432 U.S. 98, 114-17, 97 S.Ct. 2243, 2253-54, 53 L.Ed.2d 140 (1977); Hudson v. Blackburn, 601 F.2d 785, 788 (5th Cir.1979), cert. denied, 444 U.S. 1086, 100 S.Ct. 1046, 62 L.Ed.2d 772 (1980); United States v. Gidley, 527 F.2d 1345, 1350 (5th Cir.), cert. denied, 429 U.S. 841, 97 S.Ct. 116, 50 L.Ed.2d 110 (1976).
Looking to some of the relevant factors to be considered in evaluating the reliability of the identification — “the opportunity of the witness to view the criminal at the time of the crime, the witness’ degree of attention, the accuracy of the witness’ prior description of the criminal, the level of certainty demonstrated by the witness at the confrontation, and the length of time between the crime and the confrontation,” Hudson v. Blackburn, 601 F.2d at 788; see Neil v. Biggers, 409 U.S. 188, 199-200, 93 S.Ct. 375, 382, 34 L.Ed.2d 401 (1972)—we *451find that there was no likelihood of mis-identification in this case.17 Summitt was able to view Johnson’s face several times from a distance of no more than one and a half feet. He gave consistent detailed descriptions of Johnson’s facial appearance and attire. When presented with Johnson’s photographs within thirty minutes of the offense, he confidently identified Johnson as the offender. Similarly, without hesitation, he rebuffed a rather difficult trial cross-examination which challenged his physical and mental condition immediately after the offense and identified Johnson as the individual who committed the crime.
These factors indicate that the testimony concerning Summitt’s identification of Johnson was sufficiently reliable to outweigh the corruptive effect of the suggestive identification procedure. See Allen v. Estelle, 568 F.2d 1108, 1113 (5th Cir.1978) (final step of analysis is to weigh the factors supporting reliability of the evaluation against the corrupting effect of the suggestive identification). Given this conclusion, Johnson’s claim that his appellate counsel was ineffective for not raising this claim on direct appeal must fail. See Cross v. United States, 893 F.2d at 1292; Funchess v. Wainwright, 772 F.2d at 695 (“counsel is not to be faulted for failing to raise issues reasonably considered to be without merit”).
IV. MISAPPLICATION OF THE TEDDER STANDARD
Johnson contends that the trial court’s decision to override the jury’s recommendation of life imprisonment was unauthorized under Florida law, and that if not set aside, this decision represents an arbitrary application of the death penalty. He premises this claim on the standard announced in Tedder v. State, 322 So.2d 908, 910 (Fla.1975), which mandates that “[i]n order to sustain a sentence of death following a jury recommendation of life, the facts suggesting a sentence of death should be so clear and convincing that virtually no reasonable person could differ.”
Twice the Florida courts have reviewed this claim. On direct appeal of his conviction and sentence, the Florida Supreme Court by a bare majority upheld the trial court’s override of the jury’s recommendation, reasoning that while “the jury recommendation is to be accorded great weight,” the facts in Johnson’s case supported imposition of the death penalty. Johnson v. State, 393 So.2d at 1074 (“There are no mitigating circumstances, statutory or otherwise, and there are four valid aggravating circumstances. We conclude that death is the appropriate sentence to be imposed for this atrocious and cruel execution murder committed during the commission of an armed robbery by an escaped convict who previously had been convicted of felonies involving the use or threat of violence”).18 *452The Florida Supreme Court again rejected this claim when Johnson raised it in his application for a writ of habeas corpus and a stay of execution. Johnson II, 523 So.2d at 162.19
Without reaching the merits, the district court rejected Johnson’s claims concerning the jury override issue. The court noted that this was Johnson’s second federal ha-beas petition and that Johnson should have pursued the issue during the pendency of his prior federal proceedings. We agree. Johnson raised this claim in his first habeas corpus petition filed in federal district court, but abandoned the claim on appeal. With no explanation for his prior conduct, he now argues that the “ends of justice" require consideration of this issue on this appeal.
Although the exact contours of what constitutes the “ends of justice” sufficient to excuse an abuse of the writ are somewhat illusory, see Section V.D.2, infra, a review of the merits of Johnson’s claims convinces us that no proper showing has been made concerning his jury override claims. See Messer v. Kemp, 831 F.2d 946, 958-59 (11th Cir.1987) (in banc) (“Because we conclude, as a matter of law, that the record in this case fails to disclose [the alleged constitutional violation], our ‘ends of justice’ analysis need not proceed any further.”), cert. denied, 485 U.S. 1029, 108 S.Ct. 1586, 99 L.Ed.2d 902 (1988).
In Spaziano v. Florida, 468 U.S. 447, 104 S.Ct. 3154, 82 L.Ed.2d 340 (1984), the Supreme Court held that Florida’s statutory scheme in which a sentencing judge can override an advisory sentencing jury’s recommendation of life imprisonment is constitutionally permissible. In reaching this conclusion, the Court rejected the notion that an individual has a constitutional right to have a jury determine the appropriateness of the imposition of a capital sentence. Id. at 460-65, 104 S.Ct. at 3162-65. See also Clemons v. Mississippi, — U.S. -, 110 S.Ct. 1441, 1446-47, 108 L.Ed.2d 725 (1990) (summarizing holdings).
The fact that the Supreme Court has approved the structural framework of the Florida sentencing process does not mean, however, that a trial judge’s decision to override an advisory jury’s recommendation of life imprisonment is wholly insulated from federal habeas review. Federal courts still maintain the responsibility for ensuring that the trial court’s decision to override the jury’s recommendation in any particular case does not result in an arbitrary or discriminatory application of the death penalty. Spaziano v. Florida, 468 U.S. at 465, 104 S.Ct. at 3165; Lusk v. Dugger, 890 F.2d 332, 342 (11th Cir.1990); Parker v. Dugger, 876 F.2d 1470, 1474-75 (11th Cir.1989), cert. granted, — U.S. -, 110 S.Ct. 3270, 111 L.Ed.2d 780 (1990). Federal court review in this area, however, is not without limitation; to the contrary, our review is quite circumscribed:
It is not our function to decide whether we agree with the advisory jury or with the trial judge and the Supreme Court of Florida. Our review, rather, is limited to ascertaining whether the result of the override scheme is arbitrary or discriminatory.
Lusk v. Dugger, 890 F.2d at 342 (emphasis in original).
In other words, federal court review does not encompass an inquiry as to whether the trial judge’s decision to override the jury’s recommendation of life imprisonment is consistent with the state law standards established in Tedder and its progeny. See Lusk v. Dugger, 890 F.2d at 342; Parker v. Dugger, 876 F.2d at 1475. The answer to that question is solely an issue of state law and it is not within our province to second-guess that result. Spaziano v. Florida, 468 U.S. at 465, 104 S.Ct. at 3154. Instead, our review of a particular case challenging the state court’s approval of trial court override of jury’s life recommendation is limited to whether the imposition of the death penalty in that given case is either arbitrary or discriminatory. Id.
Johnson points to four factors which he contends warrant a conclusion that the “ends of justice” mandate setting *453aside the death penalty in his case: First, he points to the fact that only a bare majority of the Florida Supreme Court thought the trial court’s override of the jury’s recommendation was proper on direct appeal. Johnson v. State, 393 So.2d at 1074; id. at 1075 (Sundberg, C.J., concurring in part and dissenting in part); id. at 1075 (McDonald, J., dissenting). Second, he contends that in Johnson II, the Florida Supreme Court intimated that his jury override would not be acceptable if presented today, but that the court, invoking the “law of the case” doctrine, refused to reverse the death penalty. See Johnson II, 523 So.2d at 162 (“even though the jury override might not have been sustained today, it is the law of the case. In view of the Court’s prior consideration of this issue, there has been no showing of prejudice”). Third, he argues that a majority of the present Florida Supreme Court has clearly stated that imposition of the death penalty is improper in his case.20 And finally, he points to Cochran v. State, 547 So.2d 928, 933 (Fla.1989) (per curiam), in which he argues that the Florida Supreme Court has expressly conceded that it currently applies the Tedder standard in a manner differently from the manner in which it was applied during the pendency of his direct appeal.21 These four factors, he argues, inextricably lead to the conclusion that his sentence of death represents an arbitrary imposition of death.
Although Johnson’s arguments have considerable force, to the extent that they are directed to the federal courts, they ultimately must fail.22 Admittedly, the fact that there is an indication that the jury override decision might not be sustained had it been appealed to the Florida Supreme Court today is some indication of arbitrariness. However, we cannot conclude that the decision not to set aside the trial court’s decision rises to the required constitutional level of arbitrariness. "A state imposes punishment arbitrarily ‘when, without reason, it inflicts upon some people a severe punishment that it does not inflict upon others.’ ” Parker v. Dugger, 876 F.2d at 1476 (quoting Furman v. Georgia, 408 U.S. 238, 274, 92 S.Ct. 2726, 2744, 33 L.Ed.2d 346 (1972) (Brennan, J., concurring)).
Here, the Florida Supreme Court, by invoking “law of the case,” determined that *454it would not revisit its earlier determination that not only were there no mitigating circumstances to support the jury’s recommendation of life imprisonment, but that there were four aggravating circumstances present. Given those facts, the court concluded on direct appeal “that the facts suggesting the death sentence are so clear and convincing that virtually no reasonable person could differ.” Johnson, 393 So.2d at 1074.
The court’s invocation of the “law of the case” doctrine in Johnson II was not constitutionally arbitrary. The Florida courts have relied upon the “law of the case” doctrine “in order to lend stability to judicial decisions and the jurisprudence of the state, as well as to avoid ‘piecemeal’ appeals and to bring litigation to an end as expeditiously as possible.” Strazzulla v. Hendrick, 177 So.2d 1, 3 (Fla.1965). We have ourselves recognized that this doctrine “operates to create efficiency, finality and obedience within the judicial system.” Litman v. Massachusetts Mutual Life Insurance Co., 825 F.2d 1506, 1511 (11th Cir.1987) (in banc), cert. denied, 484 U.S. 1006, 108 S.Ct. 700, 98 L.Ed.2d 652 (1988).
In refusing to review claims on habeas that it has already determined adversely to the petitioner on direct appeal, the Florida Supreme Court has emphasized the state’s significant interest in obtaining finality of judgments. See, e.g., Porter v. Dugger, 559 So.2d 201 (Fla.1990); Kennedy v. Wainwright, 483 So.2d 424, 426 (Fla.), cert. denied, 479 U.S. 890, 107 S.Ct. 291, 93 L.Ed.2d 265 (1986). Given the recognized and significant interest that a state has in reaching finality in its criminal judgments, cf. Butler v. McKellar, — U.S. -, 110 S.Ct. 1212, 108 L.Ed.2d 347 (1990); Saffle v. Parks, — U.S. -, 110 S.Ct. 1257, 108 L.Ed.2d 415 (1990); Teague v. Lane, 489 U.S. 288, 109 S.Ct. 1060, 1074-75, 103 L.Ed.2d 334 (1989), we cannot conclude in this case that the state’s invocation of the “law of the case” doctrine constitutes an arbitrary decision justifying federal court intervention. In Johnson v. State, 393 So.2d at 1074, the Florida Supreme Court affirmed the trial court’s determination that there were four statutory aggravating factors and no mitigating factors whatsoever. In light of the foregoing, we find that imposition of the death penalty in this case was not unconstitutionally arbitrary.23 See Spaziano v. Florida, 104 S.Ct. at 3166; Lusk v. Dugger, 890 F.2d at 342; Parker v. Dugger, 876 F.2d at 1475-76.
V. INEFFECTIVE ASSISTANCE OF COUNSEL AT SENTENCING
Johnson claims that he received ineffective assistance of counsel during the sentencing phase of his state court trial. He contends that the counsel employed at sentencing and the psychiatrist who assisted counsel were woefully unprepared to put on an effective defense. He also alleges that counsel inexplicably failed to inform his psychiatrist of his 25-year history of multiple drug abuse and addiction. Had this evidence been developed, he charges, sentencing counsel would have been able to create a record that probably would have influenced the sentencing judge to honor the jury verdict and, in any event, would have prompted the Florida Supreme Court to implement the Tedder standard precluding the override.
Without a hearing, the district court rejected this claim as being procedurally barred. The court noted that Johnson sought to raise this claim in his Florida Rule 3.850 proceedings. The Florida Supreme Court, however, rejected this claim, finding that Johnson had not filed his Rule 3.850 petition within the rule’s time constraints, and that consequently, review on the merits was barred. Johnson III, supra.
*455A. Procedural Default
The doctrine of procedural default is grounded upon considerations of comity and concerns for the orderly administration of criminal justice. Murray v. Carrier, 477 U.S. 478, 490-91, 106 S.Ct. 2639, 2646-47, 91 L.Ed.2d 397 (1986); Harmon v. Barton, 894 F.2d 1268, 1270 (11th Cir.1990). The doctrine was developed as a means to ensure that petitioners would first seek relief in accordance with existing state procedures. See Presnell v. Kemp, 835 F.2d 1567, 1578-79 (11th Cir.1988), cert. denied, 488 U.S. 1050, 109 S.Ct. 882, 102 L.Ed.2d 1004 (1989). By channeling petitioners’ claims initially into the state courts for resolution, the doctrine vindicates the state’s interest in the integrity of its proceedings and gives due recognition to state rules designed to promote accuracy, efficiency, and finality of judicial decisions. Reed v. Ross, 468 U.S. 1, 10, 104 S.Ct. 2901, 2907, 82 L.Ed.2d 1 (1984).
In practice, the procedural default rule creates an incentive for petitioners to utilize state rules and proceedings by imposing a severe limitation on petitioners’ ability to present claims in federal courts that were not initially raised in accordance with state rules of procedure. For example, petitioners who fail to abide by state court rules requiring a timely objection at trial will find that their ability to raise such claims in federal courts is severely circumscribed. See, e.g., Engle v. Isaac, 456 U.S. 107, 124-29, 102 S.Ct. 1558, 1570-72, 71 L.Ed.2d 783 (1982); Wainwright v. Sykes, 433 U.S. 72, 88-91, 97 S.Ct. 2497, 2507-08, 53 L.Ed.2d 594 (1977). Similarly, petitioners who fail to raise appropriate issues on direct appeal, see Smith v. Murray, 477 U.S. 527, 533, 106 S.Ct. 2661, 2665-66, 91 L.Ed.2d 434 (1986); Murray v. Carrier, 477 U.S. at 490-92, 106 S.Ct. at 2646-47, or who fail to abide by a state rule governing the manner in which claims should be presented in a state collateral attack, see Whiddon v. Dugger, 894 F.2d 1266, 1267 (11th Cir.1990); Presnell v. Kemp, 835 F.2d at 1580, may also find that federal court review of their constitutional claims is not available.
However, the constraints that the procedural default doctrine place on federal court review of federal constitutional claims are not without limit. In recognition of the important role that federal courts play in vindicating the constitutional rights of state prisoners, see Reed v. Ross, 468 U.S. at 10, 104 S.Ct. at 2907 (“There can be no doubt that in enacting § 2254, Congress sought to interpose the federal courts between the States and the people, as guardians of the people’s federal rights — to protect the people from unconstitutional action”) (quotation and citation omitted), certain criteria have been established which must be met before federal judicial review will be barred. First, the last state court to review the petitioner’s claim must clearly and expressly rely upon its state procedural rule in its explanation why it is refusing to hear the petitioner’s claim.24 Harris v. Reed, 489 U.S. 255, 109 S.Ct. 1038, 1043, 103 L.Ed.2d 308 (1989); Richardson v. Thigpen, 883 F.2d 895 (11th Cir.), cert. denied, — U.S. -, 110 S.Ct. 17, 106 L.Ed.2d 631 (1989). A state court’s failure to give a “plain statement” explicitly relying upon a state law ground will result in the procedural default doctrine being inapplicable. Harris v. Reed, 489 U.S. at -, 109 S.Ct. at 1045; see Oliver v. Wainwright, 795 F.2d 1524, 1529 (11th Cir.1986), cert. denied, 480 U.S. 921, 107 *456S.Ct. 1380, 94 L.Ed.2d 694 (1987). Second, the procedural rule relied upon by the state court must serve as an independent state law ground for denying relief. Harris v. Reed, 489 U.S. at -, 109 S.Ct. at 1042. Although a state court may reach the merits of the petitioner’s federal law claim in an alternative holding, id., 489 U.S. at -, 109 S.Ct. at 1044 n. 10; Dobbert v. Strickland, 718 F.2d 1518, 1524-25 (11th Cir.1983), cert. denied, 468 U.S. 1220, 104 S.Ct. 3591, 82 L.Ed.2d 887 (1984), its invocation and reliance upon a state procedural rule must be premised solely on an interpretation of state law. See Caldwell v. Mississippi, 472 U.S. 320, 328, 105 S.Ct. 2633, 2639, 86 L.Ed.2d 231 (1985); Ake v. Oklahoma, 470 U.S. 68, 75, 105 S.Ct. 1087, 1092, 84 L.Ed.2d 53 (1985). And finally, the state procedural rule must be adequate: that is, it must not be one that has been inconsistently interpreted or irregularly applied, see Johnson v. Mississippi, 486 U.S. 578, 587, 108 S.Ct. 1981, 1987, 100 L.Ed.2d 575 (1988); Francois v. Wainwright, 741 F.2d 1275, 1281 (11th Cir.1984), or that is manifestly unfair in its treatment of petitioner’s constitutional claim, see Oliver v. Wainwright, 795 F.2d at 1529; Spencer v. Kemp, 781 F.2d 1458, 1470-71 (11th Cir.1986) (in banc); rather, it must be a rule that the state court has faithfully applied in relevant cases. See Dugger v. Adams, 489 U.S. 401, 109 S.Ct. 1211, 1217 n. 6, 103 L.Ed.2d 435 (1989); Smith v. Dugger, 840 F.2d 787, 796 (11th Cir.1988), cert. denied, — U.S. -, 110 S.Ct. 1511, 108 L.Ed.2d 647 (1990).
Additionally, in recognition of the fact that the procedural default rule is an equitable rule that should not preclude the correction of a fundamental miscarriage of justice, the Supreme Court has carved out two exceptions to the doctrine’s applicability. Under the first exception, an adequate and independent finding of state law procedural default will not bar federal habeas review of federal claims if the petitioner can show both “ ‘cause’ for the default and ‘prejudice attributable thereto.’ ” Harris v. Reed, 489 U.S. at -, 109 S.Ct. at 1043 (quoting Murray v. Carrier, 477 U.S. at 495, 106 S.Ct. at 2649); Engle v. Isaac, 456 U.S. at 129, 102 S.Ct. at 1573; Wainwright v. Sykes, 433 U.S. at 90-91, 97 S.Ct. at 2508.
Although the Supreme Court believed that application of this “cause and prejudice” standard would correct the vast majority of instances in which a state petitioner was a victim of a fundamental miscarriage of justice, the Court recognized that in certain extraordinary cases, that might not be so. Accordingly, the Court carved a second, significantly more narrow exception to encompass those cases in which an individual was subjected to a fundamentally unjust incarceration: “where a constitutional violation has probably resulted in the conviction of one who is actually innocent, a federal habeas court may grant the writ even in the absence of a showing of cause for the procedural default.” Murray v. Carrier, 477 U.S. at 496, 106 S.Ct. at 2649.
B. Johnson Cannot Establish Cause for his State Procedural Default
Johnson first raised this ineffective assistance of counsel claim in Johnson III, supra. The Florida Supreme Court did not address the claim on the merits; instead, it concluded that because Johnson had failed to file his motion for postconviction relief within the two-year time limit imposed by Fla.R.Crim.P. 3.850, this claim was untimely filed. 536 So.2d at 1011.
The Florida court’s invocation of its two-year statute of limitations for commencing a state collateral proceeding constitutes an “adequate and independent state ground” for refusing to consider this federal claim. Whiddon v. Dugger, 894 F.2d at 1267-68. Thus, before we can review Johnson’s claim, he must either establish cause and prejudice or show that refusal to consider the claim would result in a fundamental miscarriage of justice. Id. at 1267-68 and n. 2 (failure to comply with Rule 3.850’s time limitations is reviewed under the “cause and prejudice” standard and not the “deliberate bypass” standard set forth in Fay v. Noia, 372 U.S. 391, 83 S.Ct. 822, 9 L.Ed.2d 837 (1963)). See generally Presnell v. Kemp, 835 F.2d 1567 (11th Cir.1988) (“cause and prejudice” standard for evalu*457ating claims that are procedurally barred due to petitioner’s failure to present claims seasonably to state habeas court), cert. denied, 488 U.S. 1050, 109 S.Ct. 882, 102 L.Ed.2d 1004 (1989).
Johnson first argues that he can establish cause for his procedural default in state court. He claims that he instructed his attorneys handling his state court collateral challenges to raise all possible grounds including an ineffective assistance of counsel claim premised upon a lack of investigation into his psychological well-being.25 The Florida Supreme Court found that Johnson’s post-conviction counsel’s failure to file a timely Rule 3.850 motion was attributable to an exercise of what, at least in retrospect, was a badly flawed exercise in judgment. See Johnson III, 536 So.2d at 1011 (“counsel in the postconviction hearing candidly stated that when Johnson’s lawyers decided to go to federal court, they elected to raise only certain claims and assumed that they could always come back to state court and raise others”). These errors on the part of collateral counsel, he contends, amount to ineffective assistance of counsel which constitutes the necessary cause to excuse his procedural default.
Although the Supreme Court has declined “to essay a comprehensive catalog of the circumstances that would justify a finding of cause,” Smith v. Murray, 477 U.S. at 533-34, 106 S.Ct. at 2666, the Court has given some indications as to what does and does not constitute cause. For example, claims that compliance with a state procedural rule would be futile given the state court’s past treatment of a particular issue cannot constitute cause. Engle v. Isaac, 456 U.S. at 130, 102 S.Ct. at 1573. Similarly, actions of counsel, be they motivated by tactical or deliberate thought, see Smith v. Murray, 477 U.S. at 535-36, 106 S.Ct. at 2666-67; Reed v. Ross, 468 U.S. at 14, 104 S.Ct. at 2909, or through inadvertence or error, see Murray v. Carrier, 477 U.S. at 487-88, 106 S.Ct. at 2644-45, will not constitute cause.
On the other hand, if a petitioner can show that the procedural default is the result of ineffective assistance of trial or appellate counsel, then cause for the default will be established. Murray v. Carrier, 477 U.S. at 488, 106 S.Ct. at 2645. Similarly, cause will be found in instances in which a petitioner can “show that some objective factor external to the defense impeded counsel’s efforts to comply with the State’s procedural rule.” Id. Thus, cause for failure to comply with a procedural rule may be established by a showing that the factual or legal basis for a claim was not reasonably available to the petitioner, see Amadeo v. Zant, 486 U.S. 214, 222-24, 108 S.Ct. 1771, 1777, 100 L.Ed.2d 249 (1988); Reed v. Ross, 468 U.S. at 15-16, 104 S.Ct. at 2910, that interference by state officials made compliance impossible, see Dowd v. United States ex rel. Cook, 340 U.S. 206, 71 S.Ct. 262, 263-64, 95 L.Ed. 215 (1951), or that the procedural default was caused by some other factors outside of either the petitioner’s or his counsel’s control. See, e.g., Alexander v. Dugger, 841 F.2d 371, 374 (11th Cir.1988) (delays in mail); Meagher v. Dugger, 861 F.2d 1242, 1245-46 (11th Cir.1988) (same).
The Supreme Court has not yet addressed the precise claim of cause alleged here: namely, whether cause may be established with proof that the procedural default was a result of the errors of counsel in state court collateral proceedings. A recent panel of this court, however, has addressed this very contention and rejected it. Toles v. Jones, 888 F.2d 95, 99-100 (11th Cir.1989) (per curiam) (rejecting argument that cause for procedural default may be attributed to the inadequate assistance of court-appointed counsel during state court collateral proceedings: “Since [petitioner] had no constitutional right to coram nobis counsel, he cannot excuse a procedural default based upon ineffective assistance rendered by that counsel”) (citations omitted); 26 see also Whiddon v. Dugger, 894 *458F.2d at 1267 (“[bjecause there is no right to legal counsel in collateral proceedings, poor advice about such proceedings from a state-provided lawyer or inmate law clerks will not establish petitioner’s claim of ‘cause’ ”). Accord Coleman v. Thompson, 895 F.2d 139, 144 (4th Cir.1990). Thus, while we recognize the fact that one of our sister circuits has applied an ineffective assistance analysis to determine whether the failure of an attorney to raise an issue on a state collateral challenge constitutes cause, see Harper v. Nix, 867 F.2d 455, 457 (8th Cir.1989), Stokes v. Armontrout, 851 F.2d 1085, 1092-93 (8th Cir.1988), cert. denied, 488 U.S. 1019, 109 S.Ct. 823, 102 L.Ed.2d 812 (1989), and that the Seventh Circuit has in dicta expressed conflicting views as to whether such a showing may constitute cause, compare Madyun v. Young, 852 F.2d 1029, 1033 n. 2 (7th Cir.1988) (may constitute cause); Buelow v. Dickey, 847 F.2d 420, 426 (7th Cir.1988) (cannot establish cause), cert, denied sub nom. Buelow v. Bablitch, — U.S. -, 109 S.Ct. 1168, 103 L.Ed.2d 227 (1989); Morrison v. Duckworth, 898 F.2d 1298 (7th Cir.1990) (might sometimes constitute cause), we are constrained by prior precedent to reject this proffer of cause.27
C. A Remand is Necessary to Determine Whether Johnson’s Claims Must be Heard to Avoid a Fundamental Miscarriage of Justice
Johnson also argues that the errors of his trial counsel in not presenting relevant mitigating evidence are of such a magnitude that the second exception to the procedural default doctrine must be invoked. He argues that to do otherwise would be to condone the imposition of the death sentence on an individual who, under Florida state law, would otherwise not be put to death. Therefore, he asserts, this court must exercise its equitable powers and consider his claim in order to prevent a fundamental miscarriage of justice.
It is well-recognized that, in certain extraordinary circumstances, a federal court has the inherent, equitable power to consider an issue notwithstanding the existence of a procedural bar. See Smith v. Murray, 477 U.S. at 537, 106 S.Ct. at 2668; Murray v. Carrier, 477 U.S. at 495-96, 106 S.Ct. at 2649. The more difficult determination is delineating what circumstances are sufficiently compelling to authorize federal court intervention. See 17A C. Wright, A. Miller & E. Cooper, Federal Practice and Procedure: Jurisdiction 2d § 4266.1 at 467 (1988 & Supp.1989). Because prior precedent suggests that the ultimate determination as to whether federal intervention is warranted is inextricably linked to the actual allegations raised in the petitioner’s claim, see Dugger v. Adams, 489 U.S. at -, 109 S.Ct. at 1217 n. 6; Smith v. Murray, 477 U.S. at 538, 106 S.Ct. at 2668, we find it advisable, before inquiring whether Johnson’s allegations and proffer of proof are sufficient to warrant federal consideration, to first examine the substantive content of his claim. Cf. Messer v. Kemp, 831 F.2d at 958-59.
1. Johnson’s Claim of Ineffective Assistance of Sentencing Counsel
Johnson’s claim of ineffective assistance of sentencing counsel is premised upon the *459alleged failure of his attorney and court-appointed psychologist to conduct a competent investigation concerning his mental and psychological state prior to sentencing. Had they done so, he alleges, they would have discovered severe psychological disabilities resulting from his prolonged and obsessive history of drug consumption. Relying upon Strickland v. Washington, 466 U.S. 668, 104 S.Ct. 2052, 80 L.Ed.2d 674 (1984), which guarantees a criminal defendant the right to effective assistance of counsel, Johnson contends that had his counsel and psychologist developed an adequate psychological profile of his condition, they would have discovered more than sufficient evidence to support findings of at least three statutory mitigating factors. These findings, he charges, would have precluded the trial court’s jury override.
Johnson’s counsel at sentencing were not involved in his defense during any of the preliminary proceedings, the jury voir dire, or the actual trial, nor did they attend those proceedings.28 Although the sentencing hearing took place the day after the conviction was announced, sentencing counsel did not attempt to procure the services of a psychologist to examine Johnson until after conviction.29 Upon locating a psychologist, Dr. Ronald Yarbrough, they then proceeded to the jail where Johnson was being held. It was not until 11:00 p.m. that night that Dr. Yarbrough was finally able to meet with Johnson at the jail.30 Given the lateness of the hour and the fact that the sentencing proceeding was scheduled for the next day, Dr. Yarbrough was able to conduct only a brief two and one-half hour diagnostic interview in which he administered various psychological tests. This interview was to form the sole basis of Dr. Yarbrough’s testimony at the sentencing hearing.
The testimony Dr. Yarbrough gave at the jury sentencing hearing, Johnson charges, was premised upon a woefully incomplete psychological examination. At the hearing, Dr. Yarbrough, although unable to offer any conclusions concerning Johnson’s mental and psychological stability, testified that from his very brief diagnostic interview with Johnson he was able to develop “some strong hypotheses” concerning Johnson’s condition.31 He testified that Johnson probably had a high average range of intelligence and an extremely high level of common sense.32 He further offered his impression that Johnson appeared in touch with reality33 and was capable of immediately grasping situations that confront him.34 According to Dr. Yarbrough’s testimony, Johnson evidenced no signs of organic brain damage,35 and there was no evidence that he lacked the capacity to appreciate the criminality of his conduct.36 The only evidence that Dr. Yarbrough was effectively able to offer in mitigation was an opinion that Johnson’s normal ability to function deteriorates significantly when confronted with a stressful situation.37
This psychological assessment was severely flawed, Johnson now charges, by his sentencing counsel’s failure to provide Dr. Yarbrough with any information indicating Johnson’s almost 25-year history of severe, multiple drug addiction. As Dr. Yar-brough concedes in an affidavit filed with Johnson’s petition for federal habeas corpus, at the time that he testified before the *460sentencing jury, he had no indication of Johnson’s drug affliction, much less the totally pervasive nature of his addiction.38 Dr. Yarbrough’s affidavit reveals that, at the time of the sentencing hearing, he was not aware that Johnson was suffering from an extraordinarily severe “physical, psychological and financial dependency to a poly-drug use habit” which had developed several years earlier when Johnson began taking painkillers after having been seriously injured in a motorcycle accident.39 Nor was he aware that Johnson regularly consumed large quantities of various narcotics simultaneously or that in the days immediately prior to the offense Johnson had obtained and been continuously consuming narcotics and other stimulants.40
After having been thoroughly apprised of Johnson’s drug abuse and having reviewed affidavits not only from Johnson’s friends and family members attesting to Johnson’s history of severe drug problems, but also from Dr. Peter Macaluso, an expert addictionologist who has since conducted an extensive interview with Johnson concerning his substantial consumption of alcohol and narcotics,41 Dr. Yarbrough now concludes that much of his testimony before the sentencing jury was erroneous.
*461Dr. Yarbrough’s current assessment of Johnson’s psychological condition at the time of the offense is radically different from his sentencing testimony. Dr. Yar-brough’s evaluation of Johnson now describes an individual wholly and completely consumed with the thought of obtaining drugs.42 Johnson’s addiction, according to Dr. Yarbrough, lead to an absolute psychological obsession with drug consumption.43 Knowing that Johnson had been regularly consuming narcotics in the days leading up to the offense and having been provided information concerning Johnson’s “addiction to drugs, which was the sole motivation for the drugstore robbery that resulted in an unplanned gun battle and the victim’s death,” Johnson III, 536 So.2d at 1013 (Barkett, J., dissenting), Dr. Yar-brough now opines that Johnson “was under the influence of a totally controlling, extreme drug addiction which would have lead to his mind being totally controlled by the presence or absence of drugs.”44 In another reversal of his earlier preliminary findings as testified to the advisory jury, Dr. Yarbrough now concludes that Johnson “acted under extreme duress, when fired upon [by the victim], and as indicated from his psychological testing went into a totally emotional, irrational mode of response. At that instant, my opinion is that, due to his drug abuse and combined emotionality of the moment, Marvin’s capacity to appreciate the criminality of his behavior or to conform to the requirements of the law were [sic] substantially impaired.”45
Other affidavits offered by Johnson establish that two other experts who personally interviewed Johnson in 1988, Dr. Maca-luso and Dr. Robert A. Fox, Jr., a psychiatrist, concur with Dr. Yarbrough’s revised assessment. They report that until he suffered a serious back injury in 1974, Johnson had been vocally opposed to narcotic drug abuse.46 After the injury, however, Johnson began using narcotics to ease the pain. Although initially these drugs were prescribed by his treating physician, when the prescription was discontinued, Johnson began self-administering illegal narcotics in an attempt to ease the continuing pain.47 Unfortunately, they report, what commenced as a treatment for pain soon manifested itself as an obsessive addiction transforming Johnson into an individual “with an extraordinarily severe drug dependence personality”48 who used drugs “in an obsessive and compulsive manner.” 49
As with Dr. Yarbrough’s current assessment, many of the current conclusions offered by Drs. Fox and Macaluso stand directly contrary to Dr. Yarbrough’s sentencing testimony. According to Drs. Fox and Macaluso, Johnson’s physical and psychological addiction was so overwhelming that it overpowered his capacity for rational thought.50 In their opinion, Johnson’s voracious appetite for drugs together with the fact that he had consumed a large variety of addictive narcotics on the day of the offense51 and the stress Johnson experienced when the victim began firing at him left Johnson unable to curtail his criminal actions or appreciate the nature of his actions.52 And finally, in yet another contradiction of Dr. Yarbrough’s sentencing testimony, their interviews revealed evidence that Johnson suffered from both “meta*462bolic and chemical organic brain syndrome.” 53
The results from these more recent comprehensive psychological examinations are extremely significant. The results, if true, demonstrate that Dr. Yarbrough’s preliminary conclusions as testified to in the advisory jury sentencing hearing were woefully inaccurate. More importantly, this evidence, if true, suggests the existence of three statutory mitigating factors under Florida law. See Fla.Stat. § 921.141(6)(b) (“The capital felony was committed while the defendant was under the influence of extreme mental or emotional disturbance.”); § 921.141(6)(e) (“The defendant acted under extreme duress or under the substantial domination of another person.”); § 921.141(6)(f) (“The capacity of the defendant to appreciate the criminality of his conduct or to conform his conduct to the requirements of law was substantially impaired.”).
Thus, were this case before us unencumbered with concerns of procedural default, we think it is clear that the proffered evidence would support a conclusion that Johnson was prejudiced by his sentencing counsel’s failure to develop and present this evidence during sentencing before the trial judge. See Porter v. Wainwright, 805 F.2d 930, 935-36 (11th Cir.1986), cert. denied, 482 U.S. 918, 107 S.Ct. 3195, 96 L.Ed.2d 682 (1987); Stevens v. State, 552 So.2d 1082, 1086 (Fla.1989). Here, the sentencing court in overriding the jury’s recommendation of life imprisonment emphasized the fact that he found no mitigating circumstances to support the jury’s recommendation.54 On the basis of this factual finding, he determined that since he could adduce no facts upon which a reasonable person could suggest a sentence other than death, a jury override was appropriate. However, the evidence that Johnson has submitted now suggests that the sentencing judge was operating under a fundamental misconception as to the existence of mitigating factors. Given these facts, we find our observations in Porter v. Wainwright, supra, a case involving an almost identical scenario, to be particularly apropos: “[I]n light of the fact that the sentencing judge viewed this case as one without mitigating circumstances when in fact, assuming [petitionerj’s allegations to be true as we must in this posture, there were mitigating circumstances which cannot be characterized as insubstantial, our confidence in the outcome — the outcome being the trial judge’s decision to reject the jury recommendation — is undermined.” 805 F.2d at 936 (footnote omitted). See also Douglas v. Wainwright, 714 F.2d 1532, 1554-58 (11th Cir.1983), vacated, 468 U.S. 1206, 104 S.Ct. 3575, 82 L.Ed.2d 874 (1984), reinstated, 739 F.2d 531 (11th Cir.1984), cert. denied, 469 U.S. 1208, 105 S.Ct. 1170, 84 L.Ed.2d 321 (1985); Heiney v. Dugger, 558 So.2d 398 (Fla.1990); Stevens v. State, 552 So.2d at 1085-88. We conclude that there is a reasonable probability that the sentencing judge would not have overridden the jury verdict had he been presented with the evidence now proffered.55 Indeed, we conclude that there is a high degree of certainty that the sentencing court would not have overridden the jury verdict.
Moreover, under Florida law, a trial judge may override a jury’s life recommendation only when “the facts suggesting a sentence of death” are “so clear and convincing that virtually no reasonable person could differ.” Tedder v. State, 322 So.2d at 910. Had the three statutory mitigating factors supported by Johnson's proffer been established during the sentencing hearing before the judge, we conclude that there is a reasonable probability that the Florida Supreme Court would not have per*463mitted an override. Indeed, when reviewed in context of the sharp differences in opinion concerning the propriety of the sentencing judge’s jury override on the existing record — i.e., absent consideration of the newly proffered evidence — see Johnson II, 523 So.2d at 161 (Barkett, J., specially concurring); Johnson v. State, 393 So.2d at 1074; id. at 1075 (Sundberg, C.J., concurring in part and dissenting in part); id. at 1075 (McDonald, J., dissenting), we conclude that there is a high degree of certainty that the Florida Supreme Court would not have permitted such an override had the evidence now before us been timely presented.
Without conceding the prejudice prong of the Strickland formula, the state at oral argument suggested that the entire inquiry is unnecessary because the decision not to develop this evidence concerning the manifestation of Johnson’s drug obsession was the product of a tactical decision by Johnson’s sentencing counsel. According to the state, Johnson’s sentencing counsel determined that the most expedient manner in which to protect the jury’s life recommendation was to do nothing that would draw the sentencing judge’s attention away from the jury’s verdict. The state also suggests that there was a strong tactical reason for not introducing evidence of Johnson’s drug addiction: doing so would have allowed the state to introduce the details of Johnson’s extensive record of violent criminal behavior exhibited in his pursuit of obtaining more and more narcotics. Johnson’s attorneys, the state argues, were extremely concerned that the advisory sentencing jury would learn about Johnson’s history of criminal violence. As evidence of this concern, the state points to the fact that Johnson’s attorneys successfully convinced the sentencing judge to enter a motion in li-mine prohibiting the introduction of character evidence.56 Additionally, the state notes that in counsel’s opening statement before the jury Johnson’s attorney stated that the defense had no intention of introducing character evidence in mitigation.57
If, as the state contends, the decision not to adduce the psychological evidence now at issue was the product of a reasoned tactical decision by Johnson’s sentencing counsel, then the state’s contention that there was no ineffective assistance of counsel is accurate. See Sanchez v. United States, 782 F.2d 928, 935 (11th Cir.1986) (“when a lawyer makes an informed choice between alternatives, his tactical judgment will almost never be overturned”). To prove ineffective assistance of counsel, it is not sufficient for a petitioner to establish merely that counsel’s actions prejudiced the outcome of the proceedings in question; rather, the petitioner must also prove that his attorney’s performance was deficient. Strickland v. Washington, 466 U.S. at 687, 104 S.Ct. at 2064. This requires proof that the attorney’s conduct, when reviewed in light of the totality of the circumstances, was “outside the wide range of professionally competent counsel.” Id.
In evaluating an attorney’s performance, a federal court must be careful not to judge using hindsight, but must instead review the performance from the perspective of the attorney at the time in question. Smith v. Murray, 477 U.S. at 536, 106 S.Ct. at 2667; Strickland v. Washington, 466 U.S. at 689, 104 S.Ct. at 2065. Recognizing the difficulties inherent in conducting a review of the historical actions of counsel, the Supreme Court has cautioned that deficient performance of counsel should only be found when the defendant overcomes “the presumption that, under the circumstances, the challenged action ‘might be considered sound trial strategy.’ ” Strickland v. Washington, 466 U.S. at 689, 104 S.Ct. at 2065.
Thus, to prove that his counsel was ineffective, Johnson must submit sufficient evidence to rebut the presumption that his sentencing counsel’s failure to develop the evidence he now offers was the product of “a deliberate, tactical decision” not to pursue this line of evidence at sentencing. See Smith v. Murray, 477 U.S. at 534, 106 *464S.Ct. at 2666. We recognize that “while an attorney is required to conduct a ‘reasonable investigation’ into possible mitigating evidence, counsel may limit presentations of such evidence in the exercise of his reasonable strategic judgment.” Smith v. Dugger, 840 F.2d 787, 795 (11th Cir.1988) (citations omitted), cert. denied, — U.S. -, 110 S.Ct. 1511, 108 L.Ed.2d 647 (1990). The decision to limit an investigation as to available mitigating circumstances to be introduced during a capital sentencing hearing, however, “must flow from an informed judgment.” Harris v. Dugger, 874 F.2d 756, 763 (11th Cir.) (emphasis added), cert. denied, — U.S. -, 110 S.Ct. 573, 107 L.Ed.2d 568 (1989); Armstrong v. Dugger, 833 F.2d 1430, 1433 (11th Cir.1987); see Burger v. Kemp, 483 U.S. 776, 794-796, 107 S.Ct. 3114, 3126, 97 L.Ed.2d 638 (1987). In this case, recognizing the fact that Johnson has not yet had an evidentiary hearing on this ineffective assistance claim and assuming that the evidence now proffered before us is true, see Townsend v. Sain, 372 U.S. 293, 312, 83 S.Ct. 745, 746, 9 L.Ed.2d 770 (1963); Porter v. Wainwright, 805 F.2d at 933, we believe Johnson has submitted sufficient evidence to support a conclusion that his sentencing counsel’s failure to obtain a proper psychological investigation was not the result of a reasonable tactical decision.
Contrary to the state’s suggestions, the record does not conclusively demonstrate that Johnson’s attorneys’ actions were the result of careful and deliberate thought. See Blackledge v. Allison, 431 U.S. 63, 76, 97 S.Ct. 1621, 1630, 52 L.Ed.2d 136 (1977) (petitioner’s allegations are to be viewed in light of the actual record of the proceedings). Prior to the sentencing hearing before the jury, counsel indicated to the judge that their investigation into possible mitigating factors was far from complete. They requested that the judge grant a continuance so they could conduct further investigation. Given the fragmentary nature of their own investigations at that time, counsel, hoping “that there may be some information in the report that will benefit the defendant, and that information should be known to the jury — information that we do not know, and that the investigative agencies of the state would be able to learn to assist the Court and counsel for the State and counsel for the defendant,”58 asked the judge to obtain a presentenee investigation report prior to the advisory jury sentencing hearing.
They also advised the judge that additional time was necessary if they were to obtain a comprehensive diagnosis of Johnson’s psychological condition. They explained that they had not obtained Dr. Yar-brough’s services until the night before. In light of the expedited nature of Dr. Yarbrough’s examination and in light of the fact that any testimony given by Dr. Yarbrough on the basis of his examination would consist of only preliminary findings, they asked the judge to postpone the hearing until Dr. Yarbrough could complete his psychological examination.59
When their requests for a continuance were denied, counsel proceeded to conduct the hearing before the sentencing jury and convinced the jury to return an advisory verdict of life imprisonment. This fact in and of itself, however, does not dictate a conclusion that counsel’s investigation into Johnson’s psychological condition was sufficient. See Porter v. Wainwright, 805 F.2d at 933—35; Douglas v. Wainwright, 714 F.2d at 1554-58. See also Heiney v. Dugger, 558 So.2d 398 (Fla.1990); Stevens v. State, 552 F.2d at 1085-88. At the time of the jury sentencing, counsel knew that their psychological investigation was woefully inadequate. They had approximately one month between the time of the jury sentencing hearing and the final hearing before the trial court judge in which to obtain a more detailed psychological analysis. Yet, during that one month interval, there is no indication that counsel, despite their original pleas for a continuance, sought to develop further psychological evidence.
*465Because we do not have the comfort of reviewing this case on the basis of a fully-developed factual record, our ability to assess whether there were any reasons to justify sentencing counsel’s inactivity is severely hampered. But the current record casts doubt on the state’s ultimate conclusion that trial counsel’s inaction was the reflection of a deliberate choice to keep the trial court’s attention directed away from Johnson’s record of violent criminal behavior. As an initial matter, we note that Johnson’s defense team never really sought to keep Johnson’s criminal record away from the jury. As early as the jury voir dire, Johnson’s trial counsel asked questions concerning whether the fact that a defendant had a criminal history would affect a juror’s deliberations and went so far as to intimate that Johnson had several prior convictions.60 This fact was also acknowledged in trial counsel’s opening statement.61 Moreover, the state in its cross-examination of Johnson at trial, elicited the fact that Johnson had 10 prior convictions.62 The state also introduced proof during the sentencing hearing that at least two of those 10 convictions were for armed robbery involving the use of violence,63 and that Johnson had escaped from custody after one of those convictions.64 Finally, we note that the state itself created an inference of Johnson’s drug history through the testimony of Gary Summitt, the eyewitness,65 and emphasized Johnson’s familiarity with various narcotics in its closing argument during trial.66
Similarly, we cannot, on the record before us, attribute the fact that sentencing counsel filed a successful motion in limine prior to the jury sentencing hearing seeking to prohibit the introduction of character evidence as indicating that counsel deliberately chose to keep from the jury evidence suggesting the physiological and psychological manifestations of Johnson’s drug obsession. The transcript from that hearing reveals that sentencing counsel’s motivation in bringing the motion in limine was to insure that the state, in establishing statutory aggravating factors, did not attempt to circumvent existing state law and introduce evidence of an offense (i.e., an escape) for which Johnson had been accused but not yet convicted. See Record at 1613-1616. See also Dougan v. State, 470 So.2d 697, 701 (Fla.1985), cert. denied, 475 U.S. 1098, 106 S.Ct. 1499, 89 L.Ed.2d 900 (1986); Odom v. State, 403 So.2d 936, 942 (Fla.1981), cert. denied, 456 U.S. 925, 102 S.Ct. 1970, 72 L.Ed.2d 440 (1982); Spaziano v. State, 393 So.2d 1119, 1123 (Fla.), cert. denied, 454 U.S. 1037, 102 S.Ct. 581, 70 L.Ed.2d 484 (1981). Johnson’s sentencing counsel did not, and indeed, in light of the fact that Johnson had already testified that he had been convicted 10 times, could not have sought to keep from the jury evidence of Johnson’s prior criminal record. Indeed, the state prosecutor in his closing argument at sentencing reminded the jury that they had learned that Johnson had a history of criminal conduct. See Record at 1548 (“The first mitigating circumstance is that the defendant has no significant history of prior criminal activity. Certainly, that mitigating circumstance is not applicable in this case because you know that he *466does have a significant history of prior criminal activity”).
Furthermore, and in many respects, more importantly, the state, by seeking to focus our attention on the jury’s knowledge, misperceives the nature of Johnson’s argument. Johnson’s principal claim as we construe it concerns not so much his counsel’s performance before the jury where a life imprisonment recommendation was obtained, but counsel’s apparent failure to finish the psychological investigation during the one month interim before the final hearing in front of the sentencing judge. Thus, the operative inquiry here must focus on why Johnson’s sentencing counsel failed to utilize that time period in a manner that would allow Dr. Yarbrough to complete his investigation and why integral information that would have assisted Dr. Yarbrough in conducting his evaluation was never provided to him.
When the inquiry is phrased in this manner, the state’s suggestion that counsel made a strategic decision not to investigate and present psychological evidence becomes tenuous indeed. For example, in his arguments to the judge at sentencing, one of Johnson’s sentencing counsel sought to use Johnson’s drug history in mitigation.67 Similarly, Johnson’s counsel acknowledged that Johnson had a prior record and that some of his offenses were accompanied by exhibitions of violence.68 And finally, it appears from the record that the state, in its attempt to persuade the judge to override the jury’s recommendation, itself provided substantial evidence to the judge concerning the details of Johnson’s criminal background.69
Combined with these various pieces of record evidence is the fact that the sentencing judge had presided over the entire trial and jury sentencing proceedings. The sentencing judge was fully aware that Johnson had a significant criminal record and that Johnson had committed the capital offense while attempting to obtain various narcotics. In short, reviewing the record in its present state, we see little evidence to support a tactical decision to hide from the sentencing judge Johnson’s prior criminal activity.
Whether or not counsel made an informed tactical decision is a question of fact. See Thames v. Dugger, 848 F.2d 149, 151 (11th Cir.1988); Messer v. State of Florida, 834 F.2d 890, 896 (11th Cir.1987). Without the benefit of an evidentiary hearing at either the state or federal level, we cannot conclude, as a matter of law on the current record, that Johnson’s counsel made a tactical decision not to conduct a complete investigation into Johnson’s psychological condition. The current record supports conflicting inferences which ultimately can only be resolved through the development of a full evidentiary hearing. See Porter v. Wainwright, 805 F.2d at 935. Having reviewed the record and taking into account the potential impact of the evidence Johnson claims counsel failed to develop, we cannot conclude that Johnson’s sentencing counsel’s failure to obtain “at least one psychiatric examination and opinion developed in a manner reasonably calculated to allow adequate review of relevant, available information, and at such a time as [would] permit counsel reasonable opportunity to utilize the analysis *467in preparation and conduct of the defense,” Blake v. Kemp, 758 F.2d 523, 529 (11th Cir.) (emphasis added), cert. denied, 474 U.S. 998, 106 S.Ct. 374, 88 L.Ed.2d 367 (1985), was the result of conscious, reasonable thought.
Thus Johnson has alleged facts which if true would establish ineffective assistance of counsel at sentencing. However, as already discussed, he cannot establish the requisite cause to excuse his procedural default in the state collateral proceedings. Therefore, the question before us is whether the alleged factual errors and omissions are of such a magnitude that a fundamental miscarriage of justice would result were this court not to entertain the constitutional claim on the merits.
2. Johnson’s Allegations Warrant an Evidentiary Hearing to Determine Whether Federal Court Intervention Is Necessary to Prevent a Fundamental Miscarriage of Justice
Failure to establish cause for a procedural default will, in all but the most extraordinary of cases, bar federal court consideration of the merits of a petitioner’s constitutional claims. However, in recognition of the fact that federal habeas corpus “is a bulwark against convictions that violate fundamental fairness,” Engle v. Isaac, 456 U.S. at 126, 102 S.Ct. at 1571 (quotation omitted), the Supreme Court has observed that in rare instances consideration of a claim on its merits may be necessary in spite of the petitioner’s failure to show cause in order to prevent a fundamental miscarriage of justice. Murray v. Carrier, 477 U.S. at 495-96, 106 S.Ct. at 2649. Under this exception, the procedural default doctrine will not be imposed if its application would result in the continued incarceration of an individual who may be actually innocent of the crimes for which he has been convicted. Id. Because Johnson’s charges relate not to his conviction but rather to his sentence, a transformation of this “actual innocence” standard is necessary.
Although the Supreme Court has not explicitly stated the proper formulation of this standard in the context of addressing errors during the sentencing phase of a capital offense, it has given some indication as to the proper contours of that standard. In Dugger v. Adams, 489 U.S. 401, 109 S.Ct. 1211, 103 L.Ed.2d 435 (1989), the issue before the Court was whether a petitioner’s claim premised upon Caldwell v. Mississippi, 472 U.S. 320, 105 S.Ct. 2633, 86 L.Ed.2d 231 (1985), was procedurally barred. Upholding the procedural bar, a majority of the Adams Court rejected a formulation by the dissenting justices which would have unnecessarily expanded the category of extraordinary cases in which, even absent a showing of cause and prejudice, federal intervention would be justified. A petitioner, the majority reasoned, must do more than merely argue that the alleged constitutional error by its very nature might have affected the accuracy of the death sentence; rather, the petitioner must demonstrate that he or she “probably is ‘actually innocent’ of the sentence he or she received.” 489 U.S. at -, 109 S.Ct. at 1217 n. 6.
This same view was espoused in Smith v. Murray, 477 U.S. 527, 106 S.Ct. 2661, 91 L.Ed.2d 434 (1986). In Smith, the petitioner argued that a fundamental miscarriage of justice would result were the Court not to consider the merits of his claim that testimony of a reviewing psychiatrist was improperly used against him to establish a statutory aggravating factor in support of the death penalty. The thrust of the Smith petitioner’s claim was that statements he made to a court-appointed psychiatrist were unconstitutionally used by the state to establish that there was a likelihood that he would “constitute a continuing threat to society.”
In rejecting this argument, the Court suggested an inquiry that looked to the factual basis underlying the imposition of the death sentence. The Court noted that the petitioner did not contest the veracity of the psychiatrist’s testimony. Given this fact, the Court reasoned that the alleged constitutional error could be said to have “neither precluded the development of true facts nor resulted in the admission of false ones.” Id. at 538, 106 S.Ct. at 2668. Con*468sequently, the Court determined that even if the petitioner’s claim were legally correct, the admission of undeniably accurate facts could not be said to have “pervert[ed] the jury’s deliberations concerning whether in fact petitioner constituted a continuing threat to society.” Id. (emphasis in original); cf. Kuhlmann v. Wilson, 477 U.S. 436, 454 n. 17, 106 S.Ct. 2616, 2627 n. 17, 91 L.Ed.2d 364 (1986).
Certain themes can be culled from Adams and Smith as to what constitutes a “fundamental miscarriage of justice” in the context of alleged constitutional errors during the sentencing stage of a capital proceeding. First, it is clear that a mere claim of constitutional error will rarely be sufficient to warrant a waiver of a procedural default. Second, a petitioner cannot prove his or her case simply by showing that the constitutional error in question is, by its very nature, one that potentially could have affected the decision of the sentencing body. And third, a constitutional claim that challenges only the admissibility of certain evidence without also contesting the reliability of that evidence provides insufficient grounds to excuse a procedural default. Compare Smith v. Murray, 477 U.S. at 538, 106 S.Ct. at 2668 (no fundamental miscarriage of justice where petitioner challenges admissibility but not reliability of evidence) with Murray v. Carrier, 477 U.S. at 497, 106 S.Ct. at 2650 (claim that exculpatory evidence was not revealed to defendant remanded for consideration of whether failure to correct constitutional error would result in a fundamental miscarriage of justice).
Drawing upon the foregoing Supreme Court decisions, we conclude that a petitioner, in order to establish a fundamental miscarriage of justice, must prove that as a result of the alleged constitutional error the sentencing body's deliberative process was affected to such a degree that its ultimate conclusions are probably factually in error.70 In most cases, we envision that this will necessitate proof that as a result of the alleged constitutional error (1) the sentencing body was under a misperception as to the factual background of either the offender or the offense, and (2) but for those factual misperceptions held by the sentencing body, the petitioner probably would not have received a sentence of *469death.71
Whether a petitioner can make a sufficient showing that an alleged constitutional error resulted in a sentence of death that was premised upon either false or incomplete information will, of necessity, need to be determined on an individualized basis. See, e.g., Smith v. Murray, 477 U.S. at 537-38, 106 S.Ct. at 2668; Murray v. Carrier, 477 U.S. at 497, 106 S.Ct. at 2650. In making this determination, the court will need to look to the totality of the circumstances, paying attention to both the requisite state law standards governing imposition of the death penalty and the relative strengths of the aggravating and mitigating factors found to exist. For example, under Florida law, no defendant may be sentenced to death unless the state proves the existence of one or more aggravating factors. Banda v. State, 536 So.2d 221, 225 (Fla.1988), cert. denied, — U.S. -, 109 S.Ct. 1548, 103 L.Ed.2d 852 (1989). Thus clearly a petitioner who can establish that absent an alleged constitutional error the sentencing body probably would not have found any aggravating factors would be entitled to have federal court consideration of the claim.
We decline to hold, however, that a petitioner must establish that the constitutional error implicates all of the existing aggravating factors before a federal court should entertain a procedurally defaulted constitutional claim. Above all else, the overriding concern in a federal habeas corpus proceeding is whether a criminal defendant received a fundamentally fair and accurate trial and sentencing hearing. Just as it is necessary to retroactively apply new constitutional rules of criminal procedure without which the likelihood of an accurate conviction is seriously diminished, see Saffle v. Parks, — U.S. at -, 110 S.Ct. at 1263-64; Butler v. McKellar, — U.S. at -, 110 S.Ct. at 1218; Reed v. Ross, 468 U.S. at 14-16, 104 S.Ct. at 2909-10, so too must a claim be heard that alleges a violation of a preexisting right that significantly undermines the accuracy of a sentence which imposes a punishment “unique in its severity and irre-vocability.” Gregg v. Georgia, 428 U.S. 153, 187, 96 S.Ct. 2909, 2931, 49 L.Ed.2d 859 (1976) (Stewart, J.).
That a capital sentence may be inaccurate despite the existence of aggravating factors is a basic concept in eighth amendment jurisprudence. See Hitchcock v. Dugger, 481 U.S. at 397-99, 107 S.Ct. at 1824-25; Skipper v. South Carolina, 476 U.S. 1, 4-7, 106 S.Ct. 1669, 1671-72, 90 L.Ed.2d 1 (1986); Eddings v. Oklahoma, 455 U.S. 104, 113-17, 102 S.Ct. 869, 876-78, 71 L.Ed.2d 1 (1982). The reason for this is that “[i]t is critical to the reliability of a capital sentencing proceeding that the jury render an individualized decision ... focus[ing] on the ‘particularized nature of the crime and the particularized characteristics of the individual defendant.’ ” Harris v. Dugger, 874 F.2d 756, 763 (11th Cir.) (quoting Gregg v. Georgia, 428 U.S. at 206, 96 S.Ct. at 2940), cert. denied, — U.S. -, 110 S.Ct. 573, 107 L.Ed.2d 568 (1989). A test that would require a petitioner to establish that correction of an alleged constitutional error would probably lead to the invalidation of all aggravating circumstances is inconsistent with this objective of individualized sentencing.
We recognize that the opinion of Judge Cox in our recent in banc decision, Moore v. Zant, 885 F.2d 1497 (11th Cir.1989), cert. denied, — U.S. -, 110 S.Ct. 3255, 111 L.Ed.2d 765 (1989), could be read broadly as requiring a petitioner to establish innocence as to all aggravating circumstances. Reading the opinion in context, however, *470we believe that such a reading is both unnecessary and improper.
Moore concerned the issue of whether the “ends of justice” required federal court consideration of a Gardner72 claim that the petitioner had failed to include in his first federal habeas petition. When first considered by the in banc court, the majority, recognizing that a plurality of the Supreme Court in Kuhlmann v. Wilson had suggested that the “ends of justice” could be satisfied only by a “colorable showing of factual innocence,” 477 U.S. at 454, 106 S.Ct. at 2627, held that, at a minimum, a petitioner seeking to establish the “ends of justice” must prove that “the alleged constitutional error [either] precluded the admission of true facts [or] resulted in the admission of false ones.” Moore v. Kemp, 824 F.2d 847, 857 (11th Cir.1987) (in banc) (quoting Smith v. Murray, 477 U.S. at 588, 106 S.Ct. at 2668)).73
After this decision was vacated by the Supreme Court, Zant v. Moore, 489 U.S. 836, 109 S.Ct. 1518, 103 L.Ed.2d 922 (1989),74 the in banc court reconsidered its earlier opinion. Applying (although not adopting) the “ends of justice” standard originally set forth, a new plurality75 of the in banc court determined that the petitioner had not made a sufficient showing to excuse his abuse of the writ:
Under Georgia law, a defendant may be sentenced to death even if the only aggravating circumstance present is that the murder was committed during the course of an armed robbery. See Jones v. State, 243 Ga. 820, 256 S.E.2d 907, 914 (1979). By attacking only that portion of the presentence investigation report which dealt with the accuracy of facts supporting the finding that nonstatutory aggravating factors were present, Moore has not successfully demonstrated that his sentence would not have been the same even if he prevailed on his argument regarding the nonstatutory aggravating circumstances. See Dugger v. Adams, 489 U.S. [401], -, 109 S.Ct. 1211, 1217 n. 6, 103 L.Ed.2d 435 (1989). Without such proof, Moore cannot make a “colorable showing of factual innocence” of the death sentence imposed in this case, nor can he demonstrate that the error in the sentencing proceeding which he challenges affected a “material question involving the sentence.”
Moore v. Zant, 885 F.2d at 1513.
This passage is subject to either a narrow or a broad interpretation. Read narrowly, it can be viewed as simply stating that Moore, under the particularized facts of his case, could not establish that he probably would not have received a death sentence absent the constitutional violation. On the other hand, a broad reading would suggest the establishment of a rule that a petitioner’s claim does not raise a material question unless he or she contends that absent the constitutional error he or she would not fall within the pool of death-eligible defendants under state law.
Read in the context of the entire opinion, we doubt that the broad interpretation was *471intended by the plurality. It appears from reading the opinion that the plurality was concerned not with the formulation of a new threshold determination, but rather was simply stating that Moore, under the particularized facts of his case, could not establish that he probably would have received a life sentence absent the constitutional violation. For one thing, the plurality, before embarking upon its “ends of justice” discourse, had already determined that Moore’s Gardner claim was without merit. Id. at 1513. Additionally, the plurality explicitly eschewed the notion that it was making any broad decisions concerning the proper standard for determining what proof was necessary to establish the “ends of justice.” Id. Both of these facts indicate that a broad reading of the language utilized by the plurality in Moore would be improper.
Moreover, we deem it unlikely that the Moore plurality intended to adopt an interpretation inconsistent with the most reasonable construction of existing Supreme Court guidance — i.e., that the standard is whether a petitioner is probably actually innocent of the death sentence.76 Acceptance of the broad reading of Moore, however, would entail a fundamental transformation of existing constitutional principles governing (1) the necessary prerequisites to be satisfied before imposition of the death penalty and (2) the accepted meaning of what constitutes being innocent of the death penalty. We discuss these additional constitutional concerns in turn.
There have been two fundamental principles which have governed the jurisprudence surrounding the imposition of capital punishment since its constitutionality was upheld in Gregg v. Georgia, 428 U.S. 153, 96 S.Ct. 2909, 49 L.Ed.2d 859 (1976). First, to control the arbitrary imposition of the death penalty, the state must distinguish between that class of individuals who may potentially be put to death and those who may not. Accomplishment of this objective requires the enactment of clear, consistent guidelines, Proffitt v. Florida, 428 U.S. 242, 254-56, 96 S.Ct. 2960, 2967-68, 49 L.Ed.2d 913 (1976); compare Maynard v. Cartwright, 486 U.S. 356, 108 S.Ct. 1853, 1858-60, 100 L.Ed.2d 372 (1988); Godfrey v. Georgia, 446 U.S. 420, 428-29, 433, 100 S.Ct. 1759, 1763-64, 1767, 64 L.Ed.2d 398 (1980), that “must ‘genuinely narrow the class of persons eligible for the death penalty and must reasonably justify the imposition of a more severe sentence on the defendant compared to others found guilty of murder.’ ” Lowenfield v. Phelps, 484 U.S. 231, 108 S.Ct. 546, 554, 98 L.Ed.2d 568 (1988) (quoting Zant v. Stephens, 462 U.S. 862, 877, 103 S.Ct. 2733, 2742, 77 L.Ed.2d 235 (1983)).
A state does not fulfill its constitutional obligations, however, by merely limiting the class of individuals who may be sentenced to death. In other words, a state may not simply mandate that all individuals who are death-eligible may be put to death. Sumner v. Shuman, 483 U.S. 66, 107 S.Ct. 2716, 97 L.Ed.2d 56 (1987); Roberts (Harry) v. Louisiana, 431 U.S. 633, 97 S.Ct. 1993, 52 L.Ed.2d 637 (1977); Roberts *472(Stanislaus) v. Louisiana, 428 U.S. 325, 96 S.Ct. 3001, 49 L.Ed.2d 974 (1976); Woodson v. North Carolina, 428 U.S. 280, 96 S.Ct. 2978, 49 L.Ed.2d 944 (1976). Such an action runs counter to the second fundamental principle: namely, that the sentencing body must be permitted to consider and give effect to all mitigating circumstances surrounding the individual offender. See Penny v. Lynaugh, — U.S. -, 109 S.Ct. 2934, 2951-52, 106 L.Ed.2d 256 (1989); Hitchcock v. Dugger, 481 U.S. at 397-399, 107 S.Ct. at 1824; Skipper v. South Carolina, 476 U.S. at 4-8, 106 S.Ct. at 1670-73; Eddings v. Oklahoma, 455 U.S. at 110, 102 S.Ct. at 874. Thus notwithstanding the fact that an individual may fall within the pool of death-eligible defendants, a state must provide a mechanism by which the sentencer can make an individualized assessment of the appropriateness of the death penalty. To do otherwise in a capital case would be inconsistent with “the fundamental respect for humanity underlying the Eighth Amendment ... [which] requires consideration of the character and record of the individual offender and the circumstances of the particular offense as a constitutionally indispensable part of the process of inflicting the penalty of death.” Sumner v. Shuman, 483 U.S. at 75, 107 S.Ct. at 2722 (quoting Woodson v. North Carolina, 428 U.S. at 304, 96 S.Ct. at 2991).
A comparison between Sumner v. Shuman, supra, and Blystone v. Pennsylvania, — U.S. -, 110 S.Ct. 1078, 108 L.Ed.2d 255 (1990), crystallizes this last point. In Shuman, the Supreme Court rejected a Nevada statute that would have required mandatory imposition of the death penalty for an inmate who commits murder while serving a sentence of life imprisonment. The fatal flaw in such a statute, the Court reasoned, was that “[a] process that accords no significance to relevant facets of the character and record of the individual offender or the circumstances of the particular offense excludes from consideration in fixing the ultimate punishment of death the possibility of compassionate or mitigating factors stemming from the diverse frailties of humankind.” 483 U.S. at 74, 107 S.Ct. at 2722 (quoting Woodson v. North Carolina, 428 U.S. at 304, 96 S.Ct. at 2991).
In Blystone, the Court was confronted with what, on a superficial level, appeared to be a requirement mandating death in certain circumstances. The issue to be addressed in Blystone was whether a statute which provided that “[t]he verdict must be a sentence of death if the jury unanimously finds at least one aggravating circumstance ... and no mitigating circumstance” was constitutionally permissible. In marked contrast to the situation in Shu-man, however, this statute provided for the consideration of all relevant mitigating factors prior to the determination of the appropriate sentence. This fact, the Court concluded, was sufficient to distinguish the statute invalidated in Shuman from the Pennsylvania statute before it in Blystone. — U.S. at -, 110 S.Ct. at 1083-84 & n. 5.
The differences between the resolutions of Shuman and Blystone establish that it is not sufficient under the constitution to impose death because a given defendant meets the eligibility criteria for imposition of that sentence. Unless the sentencing body is free to consider and give effect to the full range of mitigating circumstances offered by the defendant, imposition of the death penalty remains impermissible. “[F]ull consideration of evidence that mitigates against the death penalty is essential if the [sentencing body] is to give a reasoned moral response to the defendant’s background, character, and crime.” Penry v. Lynaugh, — U.S. at -, 109 S.Ct. at 2951 (quotation omitted) (emphasis in original).
Thus, regardless of whether the state limits the pool of defendants eligible to receive the imposition of death through its definition of a capital offense or through aggravating circumstances, consideration of the character and record of the individual offender and the circumstances of the particular offense are a “constitutionally indispensable part of the process of inflicting the penalty of death.” Woodson v. North Carolina, 428 U.S. at 304, 96 S.Ct. *473at 2991; see Lowenfield v. Phelps, 484 U.S. at 245-47, 108 S.Ct. at 555 (distinguishing between the manner in which the state narrows the class of death-eligible persons and the manner in which the state selects from the class of death eligible persons). We conclude that the broad reading of the plurality opinion in Moore would be inconsistent with this constitutional requirement.
The second problem with a broad reading of the plurality opinion in Moore is that such an interpretation would transform the accepted meaning of being innocent of the death penalty. By suggesting that a petitioner must make a showing of innocence of all aggravating circumstances, the broad reading fails to distinguish between the concepts of “death eligibility” and “innocent of the death penalty” — the latter being the required showing necessary to establish the fundamental miscarriage of justice exception. As defined by both the Supreme Court and our own circuit, a defendant is generally considered “innocent of the death penalty” when the sentencing body, confronted with one of two alternatives, life imprisonment or death, chooses a life sentence. See Poland v. Arizona, 476 U.S. 147, 155-56, 106 S.Ct. 1749, 1755, 90 L.Ed.2d 123 (1986); Arizona v. Rumsey, 467 U.S. 203, 210-12, 104 S.Ct. 2305, 2310, 81 L.Ed.2d 164 (1984); Bullington v. Missouri, 451 U.S. 430, 444-46, 101 S.Ct. 1852, 1861-62, 68 L.Ed.2d 270 (1981); Godfrey v. Kemp, 836 F.2d 1557, 1568 (11th Cir.), cert. dismissed, 487 U.S. 1264, 109 S.Ct. 27, 101 L.Ed.2d 977 (1988); see also Young v. Kemp, 760 F.2d 1097, 1106-07 and n. 12 (11th Cir.1985), cert. denied, 476 U.S. 1123, 106 S.Ct. 1991, 90 L.Ed.2d 672 (1986). An “initial sentence of life imprisonment [is] undoubtedly an acquittal on the merits of the central issue in the proceeding — whether death was the appropriate punishment for the respondent’s offense.” Arizona v. Rumsey, 467 U.S. at 211, 104 S.Ct. at 2310. A return of a sentence of life imprisonment by the final sentencing body or a reviewing court denotes “that the prosecution has not proved its case that the death sentence is appropriate." Poland v. Arizona, 476 U.S. at 155, 106 S.Ct. at 1755 (emphasis in original) (quotation and footnote omitted); see Godfrey v. Kemp, 836 F.2d at 1568 (“if the initial sentencer imposes a life sentence the defendant is ‘acquitted’ of death”). In other words, a person is innocent of the death penalty when the sentencing body has rejected the death sentence and imposed a life sentence; it is not necessary to establish that one is innocent of all aggravating circumstances. See Poland v. Arizona, 476 U.S. at 156, 106 S.Ct. at 1755 (“the judge’s finding of any particular aggravating circumstance does not of itself ‘convict’ a defendant (i.e., require the death penalty)”).
Under the broad reading of Moore, a petitioner cannot make a showing of innocence of the death penalty without proving that, absent the constitutional error, no aggravating factors would exist. This interpretation, however, goes well beyond the requirement that a petitioner show that he or she “probably is ‘actually innocent’ of the sentence he or she received,” Dugger v. Adams, 489 U.S. at -, 109 S.Ct. at 1217-18 n. 6 (emphasis added); it would require that the petitioner show he or she is not death-eligible.77
*474Because adoption of the broad reading in Moore would be inconsistent with the clear constitutional requirement that the sentencing body be allowed to consider and give effect to all mitigating evidence prior to imposing sentence, and because it would contravene the common understanding of what “innocent of the death penalty” entails, we decline to adopt that interpretation here.78 Instead, we believe that in order to establish that a fundamental miscarriage of justice resulted in the imposition of a death sentence, a petitioner must generally be able to establish that the alleged constitutional error substantially “undermin[ed] the accuracy of *475the ... sentencing determination” either by precluding the development and consideration of true facts or by resulting in the admission of false ones. Smith v. Murray, 477 U.S. at 538-39, 106 S.Ct. at 2668. Under this standard, it is not sufficient to prove merely that the constitutional error precluded the development or consideration of any true facts; rather, the newly developed facts must be relevant to the factual issues to be resolved by the sentencing body — for only those facts have the potential for “pervert[ing] the [sentencing body]’s deliberations” or “undermining the accuracy of the ... sentencing determination.” Id. In addition, the new factual developments resulting from the correction of the alleged constitutional error must be of such importance that an individual petitioner can establish that he or she “probably is ‘actually innocent’ of the sentence he or she received” — that is, that absent the constitutional error the petitioner probably would not have received the death sentence.79 Dugger v. Adams, 489 U.S. at -, 109 S.Ct. at 1217-18 n. 6 (emphasis added).
Applying this standard here, we conclude that an evidentiary hearing is necessary to prevent a potential miscarriage of justice. According to Johnson, sentencing counsel’s failure to conduct a comprehensive investigation into Johnson’s psychological well-being had two substantially deleterious effects: the introduction of materially false evidence and the omission of materially accurate evidence. Assuming that Johnson’s proffered facts are true, there is ample support for this contention. Dr. Yarbrough, testifying on the basis of a hurried compilation of results from brief diagnostic tests administered the night before the hearing, stated that Johnson exhibited no signs of being out of touch with reality or of having organic brain damage. Additionally, Dr. Yarbrough opined that there was no evidence to suggest that Johnson lacked the capacity to appreciate the criminality of his conduct. This testimony effectively withdrew two statutory mitigating factors from consideration. See Fla.Stat. § 921.141(6)(b) (“The capital felony was committed while the defendant was under the influence of extreme mental or emotional disturbance.”); § 921.141(6)(f) (“The capacity of the defendant to appreciate the criminality of his conduct or to conform his conduct to the requirements of law was substantially impaired.”).
At the time these findings were introduced into testimony at the jury sentencing hearing, Johnson’s counsel, by their own admissions, were aware that Dr. Yar-brough’s testimony consisted of, at best, preliminary assessments. Sentencing counsel was also clearly conscious of the fact that significantly more psychological testing was necessary. However, they did not utilize the full one-month interval between sentencing hearings to develop an adequate psychological profile. Had they done so, they would have learned — assuming the proffered evidence is true as Dr. Yarbrough now concedes — that many of *476the initial, preliminary psychological indications were grossly in error. A completed psychological evaluation would have revealed that Johnson had a twenty-five year history of sustained drug abuse and that he was obsessed in his pursuit to obtain and consume drugs. According to all of the expert evidence submitted, this obsession, particularly when viewed in light of the large quantities of drugs consumed by Johnson in the days immediately surrounding the instant crime, left Johnson wholly dominated by his drug addiction. Had a complete psychological investigation been conducted, evidence that Johnson was unable to appreciate the criminality of his behavior would have been established as would evidence that Johnson was the victim of physiological brain disorders. These facts, in marked contrast to the Dr. Yar-brough’s sentencing testimony, very well could have supported a finding that both Fla.Stat. § 921.141(6)(b) and Fla.Stat. § 921.141(6)(f) were present in this case. Similarly, as evidenced by his current findings, Dr. Yarbrough’s testimony concerning Johnson’s susceptibility to react irrationally when placed under stress would have been substantially more probative had Yarbrough been aware of Johnson’s narcotics obsession and that Johnson had consumed significant amounts of drugs in the days immediately prior to the offense. Indeed, Dr. Yarbrough now concludes that Johnson was suffering from extreme duress as contemplated by the statutory mitigating circumstances of Fla.Stat. § 921.141(6)(e). This evidence would have been particularly compelling in light of the undisputed fact that Johnson was exiting the store without harm to anyone when the victim initiated the deadly gun battle. Johnson III, 536 So.2d at 1013 (Barkett, J., dissenting).
Although the potential impact of new evidence may sometimes be a somewhat difficult task to predict, the significance of the evidence in this case cannot be underestimated. It must not be forgotten that this case arises within the context of a judicial decision to override the sentencing jury’s life imprisonment recommendation. Such judicial overrides are permissible under Florida law in only very limited circumstances. Notwithstanding the sentencing jury’s “advisory” label, its recommendation, inasmuch as it reflects the conscience of the community, is entitled to great weight. Holsworth v. State, 522 So.2d 348, 354 (Fla.1988); Richardson v. State, 437 So.2d 1091, 1095 (Fla.1983). When a jury recommends life imprisonment, as it did in this case, a sentencing judge may not impose death simply because he or she disagrees the jury's interpretation of the evidence or with the manner in which the jury weighed the evidence. Holsworth, 522 So.2d at 354; Valle v. State, 502 So.2d 1225, 1226 (Fla.1987); Chambers v. State, 339 So.2d 204, 208 (Fla.1976) (England, J., concurring). Instead, the sentencing judge is only permitted to override the jury’s recommendation of life in cases in which it is determined that the facts suggesting death were so clear and convincing that virtually no reasonable person could differ. Tedder v. State, 322 So.2d 908, 910 (Fla.1975). Should a reasonable basis in fact exist which would support the jury’s recommended sentence, then a judicial decision to override that recommendation will be vacated. See, e.g., Freeman v. State, 547 So.2d 125, 129 (Fla.1989); Brown v. State, 526 So.2d 903, 907-08 (Fla.), cert. denied, 488 U.S. 944, 109 S.Ct. 371, 102 L.Ed.2d 361 (1988); Hawkins v. State, 436 So.2d 44, 47 (Fla.1983); Webb v. State, 433 So.2d 496, 499 (Fla.1983); Barfield v. State, 402 So.2d 377, 382 (Fla.1981); Jacobs v. State, 396 So.2d 713, 717 (Fla.1981); Brown v. State, 367 So.2d 616, 625 (Fla.1979); Provence v. State, 337 So.2d 783, 787 (Fla.1976), cert. denied, 431 U.S. 969, 97 S.Ct. 2929, 53 L.Ed.2d 1065 (1977). See generally Mann v. Dugger, 844 F.2d 1446, 1451 (11th Cir.1988) (collecting additional cases), cert. denied, — U.S. -, 109 S.Ct. 1353, 103 L.Ed.2d 821 (1989).
In this case, the sentencing judge in overriding the jury’s recommendation placed great weight upon the fact that there were no facts in mitigation to support a sentence of life imprisonment. Record at 1766. In spite of this finding that there were no reasonable grounds for mitigation *477in the record, his decision to override the jury’s recommendation sparked sharp controversy in the Florida Supreme Court and was upheld by a bare one-vote margin. See Johnson v. State, 393 So.2d at 1074 (Sundberg, C.J., concurring in part and dissenting in part); id. at 1075 (McDonald, J., dissenting). Now it appears that sentencing counsel failed to develop evidence material to petitioner’s psychological state at the time of the crime. Additionally, although petitioner had a clear history of drug abuse and petitioner’s addiction to drugs appeared to have been the sole motivation for the drugstore robbery, no evidence concerning his drug addiction was developed. Given that five different justices of the Florida Supreme Court — including four who are currently sitting on that court — have at various times questioned the appropriateness of the original override in this case, there can be little question that the introduction of evidence suggesting petitioner’s prolonged addiction to drugs and the psychological and physical pathologies arising from his sustained drug abuse would likely have provided more than ample reasonable grounds to prevent the judicial override in this case. See, e.g., Holsworth v. State, 522 So.2d at 354 (override improper where defendant had drug and alcohol problem and may have been high on PCP and alcohol at time of the murder); Masterson v. State, 516 So.2d 256, 258 (Fla.1987) (evidence that defendant had substantial drug and alcohol problem dating back to service in Vietnam and that defendant consumed substantial amounts of drugs and alcohol on the day of the murder was sufficient mitigating evidence to preclude jury override); Fead v. State, 512 So.2d 176, 178 (Fla.1987) (defendant was intoxicated); Cannady v. State, 427 So.2d 723, 731 (Fla.1983) (jury had reasonable basis for recommending life imprisonment in light of testimony concerning the psychological effects caused by defendant’s history of indiscriminate drug abuse). See also Burch v. State, 522 So.2d 810, 813 (Fla.1988); Amazon v. State, 487 So.2d 8, 13 (Fla.), cert. denied, 479 U.S. 914, 107 S.Ct. 314, 93 L.Ed.2d 288 (1986); Huddleston v. State, 475 So.2d 204, 206 (Fla.1985); Norris v. State, 429 So.2d 688, 690 (Fla.1983). If the proffered evidence establishing three statutory mitigating circumstances is true, we conclude that there is a high degree of certainty that the sentencing judge, who had relied on the erroneous assumption that there were no mitigating circumstances, would not have overridden the jury’s verdict. Similarly, we conclude that there is a high degree of certainty that the Florida Supreme Court would not have permitted an override under such circumstances.
Accordingly, looking to the totality of the circumstances in this case — including, inter alia, the probative value of the proffered evidence in light of the facts developed at trial and sentencing and in light of the posture of the case involving a jury override — we conclude that Johnson has proffered evidence which if true would establish that he probably was actually innocent of the death sentence. As a result, we conclude that it is necessary to remand this claim to the district court for consideration as to whether relief is necessary notwithstanding the existing procedural default. See Murray v. Carrier, 477 U.S. at 497, 106 S.Ct. at 2650; Ewing v. McMackin, 799 F.2d 1143, 1152 (6th Cir.1986).
D. Does Johnson’s Claim Constitute an Abuse of the Writ?
The state contends that neither a remand nor an evidentiary hearing is necessary because this claim is also due to be dismissed because it constitutes an abuse of the writ. See Rule 9(b), Rules Governing Section 2254 cases. The district court determined that it did not need to address this defense because it viewed Johnson’s claim as being procedurally barred. Given our resolution of the procedural bar issue, this rationale is no longer appropriate. Nonetheless, we conclude for reasons similar to those motivating our remand of the procedural default issue that it is proper for the district court to evaluate the state’s defense in the first instance.
1. Abuse of the Writ
Johnson did not raise this claim in his first federal habeas petition. Consequent*478ly, to justify federal court consideration of his ineffective assistance of counsel claim, he must first prove that there exists sufficient grounds to justify federal court consideration of this claim.
“A petition that raises grounds for relief not raised in the prior petition is analyzed as an ‘abuse of the writ.’ ” Gunn v. Newsome, 881 F.2d 949, 955 n. 6 (11th Cir.) (in banc) (plurality opinion), cert. denied, — U.S. -, 110 S.Ct. 542, 107 L.Ed.2d 540 (1989); see, e.g., Richardson v. Thigpen, 883 F.2d 895, 899 (11th Cir.) (per curiam), cert. denied, — U.S. -, 110 S.Ct. 17, 106 L.Ed.2d 631 (1989). When a petitioner attempts to litigate a different claim in a subsequent federal petition, federal courts run the risk of being subjected to “needless piecemeal litigation” or “collateral proceedings whose only purpose is to vex, harass, or delay.” Sanders v. United States, 373 U.S. 1, 18, 83 S.Ct. 1068, 1078, 10 L.Ed.2d 148 (1963). To control these problems, Congress and the courts have taken various steps to limit the circumstances in which new claims raised in subsequent federal petitions will be heard. See 28 U.S.C. § 2244(b); Rule 9(b) of the Federal Rules Governing Section 2254 Cases in the United States District Courts; see generally Potts v. Zant, 638 F.2d 727, 738-40 (5th Cir. Unit B), cert. denied, 454 U.S. 877, 102 S.Ct. 357, 70 L.Ed.2d 187 (1981).
Whether a petition should be dismissed for an abuse of the writ is within the discretion of the district court. Sanders v. United States, 373 U.S. at 18, 83 S.Ct. at 1079; Gunn, 881 F.2d at 957. The government bears the initial burden of raising the abuse of the writ issue. Price v. Johnston, 334 U.S. 266, 291-92, 68 S.Ct. 1049, 1063, 92 L.Ed. 1356 (1948). Once the government satisfies its burden of pleading abuse of the writ, the burden of proving that there has been no abuse shifts to the petitioner. Id. at 291-92, 68 S.Ct. at 1063. To meet this burden, the petitioner must prove by a preponderance of the evidence that he or she had some “justifiable reason” for omitting the claim in an earlier petition, Fleming v. Kemp, 837 F.2d 940, 950 (11th Cir.1988) (per curiam), cert. denied sub nom. Fleming v. Zant, — U.S. -, 109 S.Ct. 1764, 104 L.Ed.2d 200 (1989), and that the failure to include the new claim in the prior federal proceeding cannot be attributed to intentional abandonment or withholding, or inexcusable neglect. See McCleskey v. Zant, 890 F.2d 342, 347 (11th Cir.1989), cert. granted, — U.S. -, 110 S.Ct. 2585, 110 L.Ed.2d 266 (1990); Demps v. Dugger, 874 F.2d at 1391; Witt v. Wainwright, 755 F.2d 1396, 1397 (11th Cir.), cert. denied, 470 U.S. 1039, 105 S.Ct. 1415, 84 L.Ed.2d 801 (1985).
Several means exist by which a petitioner may seek to satisfy this burden. For example, he or she can seek to show that there is newly discovered evidence that was not available at the time of his original filing or that there has been a retroactive change in the law. Demps v. Dugger, 874 F.2d at 1392. Additionally, even if the petitioner cannot convince the district court that there was no abuse of the writ, he or she may still be able to obtain federal court review by establishing that the “ends of justice” so require. Sanders v. United States, 373 U.S. at 18-19, 83 S.Ct. at 1079; see Moore v. Zant, 885 F.2d at 1508.
2. Further Proceedings Are Necessary to Determine Whether the “Ends of Justice” Require Consideration of Johnson’s Claim
Although Johnson offers several arguments in support of his contention that federal court consideration of his ineffective assistance of sentencing counsel claim is required, we need not address these arguments because it appears, in any event, that a factual determination is necessary to evaluate whether the “ends of justice” require consideration of the claim.80
*479As with the “fundamental miscarriage exception” to the procedural default doctrine, a working definition of what constitutes the “ends of justice” is one over which there is considerable controversy. In Kuhlmann v. Wilson, a plurality of the Supreme Court wrote that the ends of justice require federal courts to entertain successive petitions “only where the prisoner supplements his constitutional claim with a colorable showing of factual innocence.” 477 U.S. at 454, 106 S.Ct. at 2627 (plurality opinion). This viewpoint, however, did not command a majority of the court; consequently, this circuit has interpreted Kuhl-mann as having not limited the “ends of justice” inquiry to only a “colorable showing of factual innocence.” Martin v. Dugger, 891 F.2d 807, 809 (11th Cir.1989). Instead, looking back to the various equitable considerations suggested by the Supreme Court in Sanders v. United States, 373 U.S. at 17, 83 S.Ct. at 1078, we have advised district courts to exercise their discretion to determine whether the “ends of justice” mandate federal habeas relief to correct a constitutional violation. Martin v. Dugger, 891 F.2d at 809-10.
Thus, one, but not the exclusive, means by which a petitioner with a constitutional claim relating to the sentencing phase of a capital trial can satisfy the “ends of justice” requirement is by making a colorable showing that he or she would have been found innocent of the death penalty absent the constitutional violation. To assess whether a petitioner has made a sufficient showing via this alternative, this circuit has adopted a test similar to that utilized in assessing whether a procedural default should be excused: “we must consider whether ‘the alleged constitutional error [either] precluded the development of true facts [or] resulted in the admission of false ones.’ ” Tafero v. Dugger, 873 F.2d 249, 251 (11th Cir.1989), cert, denied, — U.S.-, 110 S.Ct. 1834, 108 L.Ed.2d 962 (1990); Ritter v. Thigpen, 828 F.2d 662, 666 (11th Cir.1987). This standard is premised upon the same considerations that underlie the “fundamental miscarriage of justice” exception to the procedural default doctrine discussed earlier, and is substantively virtually identical. Because, as explained in Section V.C.2, supra, an eviden-tiary hearing is necessary to assess the petitioner’s proffered allegations and factual evidence in light of this same standard, we conclude that a remand on this issue is also necessary.
VI. INEFFECTIVE ASSISTANCE OF TRIAL COUNSEL: BALLISTICS
In his final claim, Johnson argues that his trial counsel was ineffective for failing to adequately investigate the scene of the crime and for not obtaining expert assistance to rebut the State’s ballistic evidence. Like his ineffective assistance of counsel at sentencing claim, Johnson failed to comply with the time limitations governing Rule 3.850 proceedings in Florida. Accordingly, the Florida Supreme Court declined to address this claim on the merits. Johnson III, supra.
This holding constitutes an independent and adequate state ground. Whiddon v. Dugger, 894 F.2d at 1267-68. Consequently, we will review this claim on the merits only if Johnson can establish cause and prejudice or if Johnson can show that federal review is necessary to prevent a miscarriage of justice.
Under the facts of this case, it is clear that Johnson suffered no prejudice by counsel’s failure to timely raise this claim *480in a state collateral proceeding. Notwithstanding the ballistics evidence introduced at trial, the other evidence at trial, particularly that testimony concerning Summitt’s identification of Johnson as the individual who committed the crime, provided very strong evidence to convict Johnson. Similarly, given the strength of Summitt’s eyewitness identification, we are confident that no fundamental miscarriage of justice will result from our holding that this claim is procedurally barred.
VII. CONCLUSION
In conclusion, we affirm the district court’s denial of Johnson’s petition for a writ of habeas corpus on all claims except for the claim of ineffective assistance of counsel at sentencing. We vacate the district court’s denial of Johnson’s claim of ineffective assistance of sentencing counsel and remand that claim to the district court for further proceedings consistent with this opinion.
AFFIRMED IN PART; VACATED IN PART AND REMANDED.
. As related in Johnson I, the relevant facts concerning the murder and armed robbery convictions at issue are as follows:
Gary Summitt, an employee of Warrington Pharmacy and an eyewitness to the robbery and the murder, testified that while working at the pharmacy on the evening of June 7, 1978, he went to the back of the store to ask the pharmacist, Woodrow Moulton, a question. There he saw the defendant Johnson holding a gun on Moulton who was at the pharmacy safe putting articles in a bag and he heard Johnson order Moulton to put certain drugs and money from the safe into the bag. After obtaining the drugs and money, Johnson started towards the front of the store. Moulton then grabbed a gun from behind the prescription counter. There was an exchange of gunfire, and Moulton continued to fire at Johnson until his gun was empty. No longer able to defend himself, Moulton stood up with his hands in the air. Johnson then walked up to within a foot and a half of the defenseless pharmacist, said “You think you're a smart *445son-of-a-bitch don’t you?,” and shot him in the chest.
... Though others were present in the pharmacy, Summitt was the only eyewitness to the robbery and murder.
Id. at 1480 (quotation and citation omitted).
. The trial judge, pursuant to Florida law, see Fla.Stat. § 921.141(3) (1977), issued written findings in which he found that five statutory aggravating factors existed and that no mitigating circumstances were present. The five aggravating circumstances identified were: (1) Johnson was under a Tennessee sentence of imprisonment at the time of the murder, Fla.Stat. § 921.141(5)(a); (2) Johnson had previously been convicted of a felony involving the use or threat of violence to the person, Fla.Stat. § 921.141(5)(b); (3) Johnson created a great risk of death to three other persons present at the drugstore at the time of the murder, Fla. Stat. § 921.141(5)(c); (4) the capital murder was committed during the commission of an armed robbery, Fla.Stat. § 921.141(5)(d); and (5) the manner in which Johnson killed his victim was cruel and atrocious, Fla.Stat. § 921.141(5)(h). See Johnson v. State, 393 So.2d 1069, 1072-73 (Fla.1980), cert. denied, 454 U.S. 882, 102 S.Ct. 364, 70 L.Ed.2d 191 (1981).
. The challenges on direct appeal were: (1) a claim addressing the exclusion of an expert witness to testify as to the unreliability of eyewitness identification; (2) constitutional challenges that the imposition of the death penalty after the jury had recommended life imprisonment violated his right not to be subjected to double jeopardy, his right to due process, his right to trial by a jury, and his right not to be inflicted with cruel and unusual punishment; (3) a claim that the trial judge’s override of the advisory jury’s recommendation of life imprisonment was inconsistent with the standards set forth in Tedder v. State, 322 So.2d 908 (Fla.1975); (4) a challenge to whether improper cross-examination of his testimony by the prosecutor constituted prosecutorial misconduct and denied him a fundamentally fair trial; and (5) an attack on the trial court’s decision to admit photographic evidence reconstructing the crime scene. See generally Johnson v. State, 393 So.2d 1069 (Fla.1980), cert. denied, 454 U.S. 882, 102 S.Ct. 364, 70 L.Ed.2d 191 (1981).
. The Florida Supreme Court concluded that the trial judge erred in concluding that Johnson’s actions, by creating a risk of death to three persons, were sufficient to meet the requirements of Fla.Stat. § 921.141(5)(c). Johnson v. State, 393 So.2d at 1073.
. During the pendency of his direct appeal, Johnson, along with 122 other individuals who received a death sentence in Florida, unsuccessfully filed an application for extraordinary relief and a petition for habeas corpus based upon an allegation that the Florida Supreme Court had a practice of reviewing ex parte, non-record information concerning capital defendants. See Brown v. Wainwright, 392 So.2d 1327 (Fla.), cert. denied, 454 U.S. 1000, 102 S.Ct. 542, 70 L.Ed.2d 407 (1981).
. Although Johnson had not exhausted state remedies, the state waived this defense. Johnson I, 806 F.2d at 1481 n. 2.
. Among these new issues were: (1) whether the trial court’s failure to consider nonstatutory *446mitigating factors in evidence violated due process; (2) whether the sentencing court refused to consider lingering doubt as a mitigating factor; (3) whether the Florida’s Supreme Court’s resolution of Brown v. Wainwright, 392 So.2d 1327 (Fla.), cert. denied, 454 U.S. 1000, 102 S.Ct. 542, 70 L.Ed.2d 407 (1981), comported with due process; (4) whether the trial court and the Florida Supreme Court relied upon an erroneous factual premise by accepting as true the eyewitness's recanted testimony that Johnson said, “You think you're a smart son-of-a-bitch, don’t you?" to the victim before he shot him. See generally, Johnson I, 806 F.2d at 1481 nn. 3 & 4.
. The other two issues that were abandoned on appeal concerned the admission of photographs portraying the reconstructed crime scene and whether the Florida Supreme Court denied Johnson due process by failing to remand his case for resentencing after invalidating one of the aggravating factors.
. The other three issues were that (1) appellate counsel ineffectively presented the override issue; (2) appellate counsel ineffectively challenged the aggravating circumstances found by the district court; and (3) the excusal of two jurors pursuant to section 40.01(1), Florida Statutes (1977), which gives automatic exemption from jury service to pregnant women and women with children under the age of 15, deprived Johnson of his sixth amendment right to trial by a fair cross section of the community and violated the equal protection clause of the fourteenth amendment.
. Two of the justices believed that there was a reasonable basis for the jury’s recommendation of life and that the court erred in upholding the jury override on Johnson’s direct appeal. They agreed with the majority, however, that the law of the case precluded a determination that Johnson could have been prejudiced by any ineffective assistance of appellate counsel concerning the override question. Johnson v. Dugger, 523 So.2d at 163 (Barkett, J., specially concurring).
. The two dissenting justices believed that the court should, notwithstanding the procedural bar, reach what they believed were meritorious issues and hold that a new sentencing hearing was warranted. Johnson v. State, 536 So.2d at 1012 (Barkett, J., dissenting).
. This is not to say, of course, that a decision by the trial court not to allow a defendant to present nonstatutory mitigating evidence is irrelevant to the inquiry. Clearly, a defendant who is not permitted to introduce nonstatutory evidence that is potentially mitigating in nature is deprived of his or her right to an individualized sentencing hearing. See Skipper v. South Carolina, 476 U.S. 1, 106 S.Ct. 1669, 90 L.Ed.2d 1 (1986). However, the fact that an individual defendant was permitted to introduce such evidence does not end our inquiry; we must still determine whether the sentencing jury and judge believed that they could consider and give proper effect to that evidence. See Penry v. Lynaugh, — U.S. -, 109 S.Ct. 2934, 2951, 106 L.Ed.2d 256 (1989); Eddings v. Oklahoma, 455 U.S. 104, 113-15, 102 S.Ct. 869, 876-77, 71 L.Ed.2d 1 (1982).
. In reaching this conclusion, we do not swerve from the holdings in Jones v. Dugger, 867 F.2d 1277, 1280 (11th Cir.1989), and Magill v. Dugger, 824 F.2d 879, 894-95 (11th Cir.1987), that the trial court’s consideration of nonstat-utory mitigating factors cannot render harmless a constitutional error caused by an instruction limiting the advisory sentencing jury’s consideration to only statutory mitigating factors. Both the Jones and Magill advisory juries recommended death. In both cases, the nonstatutory mitigating evidence was of such significance that this court could not say with confidence that the juries' recommendations would remain the same had they considered the evidence. Consequently, recognizing the strong presumption a trial court must accord a jury’s recommendation of life imprisonment under Florida law, see Tedder v. State, 322 So.2d at 910, this court determined that new sentencing hearings before advisory juries were necessary.
Here, however, the sentencing jury returned an advisory sentence of life imprisonment. Hence, any errors in the advisory jury’s perception of what constituted mitigating factors would be harmless. Under this circumstance, no examination of whether the jury’s consideration of mitigating factors was unconstitutionally limited to those listed in the statute is necessary.
. The state contends that this claim should be barred as constituting an abuse of the writ. Because we conclude that the claim is without merit we need not determine whether the district court abused its discretion in reaching the issue. See Messer v. Kemp, 831 F.2d 946, 958-59 (11th Cir.1987) (in banc), cert. denied, 485 U.S. 1029, 108 S.Ct. 1586, 99 L.Ed.2d 902 (1988).
. In Matire, we did not resolve the issue of whether prejudice could be established by showing that there is a reasonable likelihood that but for appellate counsel’s deficient behavior the outcome of the appeal would be different or whether prejudice could only be established by proof that there is a reasonable likelihood that the outcome on retrial would be different. Id. at 811 F.2d at 1439 n. 8. In a case decided subsequent to Matire, a panel of this court appears to have adopted the former inquiry. Cross v. United States, 893 F.2d at 1290 ("if we find that Cross’s allegations establish a Faretta violation, then we would have to find appellate counsel’s performance prejudicial because it affected the outcome of the appeal”).
. A hearing on Johnson’s motion to suppress was conducted before trial. The uncontested facts established at this hearing were as follows: Summitt first saw Johnson when he went to the back of the pharmacy. Johnson was standing above the victim, Moulton, who was kneeling in front of a safe putting drugs in a bag. Johnson ordered Summitt to assist Moulton. Summitt walked over to assist Moulton. At this point, he was approximately one to one and a half feet away from Johnson and could clearly see Johnson’s face. Record at 182-83. He then knelt *450beside Moulton and helped put drugs in the bag. On several occasions, he looked back to Johnson to ask what other drugs should be put in the bag. Id. at 183. Given the good lighting in the pharmacy, id. at 184, Summitt was able to see Johnson’s features quite clearly. Id. at 186.
After Moulton was shot and Johnson had fled, Summitt then, on at least three different occasions, gave different officers a consistent description of the individual who had committed the offense. These descriptions, each of which were given within fifteen to thirty minutes of the offense, id. at 176, were virtually identical in content. See id. at 174, 188, 190-91 (testimony of Summitt); id. at 194 (testimony of Investigator Penton of radio bulletin); id. at 195 (testimony of Investigator Penton as to description given by Summitt); id. at 206-08 (testimony of Investigator Smith as to description given by Summitt); id. at 221 (testimony of Deputy Sheriff Lewis).
After hearing this description, at least two of the officers believed the individual described to be Marvin Johnson. Within Summitt’s earshot, one of the officers asked if anyone had any pictures of Johnson. After one of the officers retrieved some photographs from his car, he proceeded to show four pictures, three of which were of Johnson, to Summitt. Summitt, after looking at the pictures for four or five seconds, positively identified the three pictures of Johnson as portraying the individual who had shot Moulton and robbed the pharmacy. Id. at 176-77, 197, 201-02, 212. Both Summitt and the officers testified that Summitt was confident in his identification of Johnson.
Upon hearing Summitt’s identification, the officers, while still in Summitt’s presence, ex*451pressed their view that they thought the description sounded like Marvin Johnson.
. Although the trial court held a hearing on the motion to suppress, it never issued any findings of fact. Similarly, no findings of fact were made by the Florida state courts or the district court in evaluating this claim. We need not remand this issue to the district court for an evidentiary hearing or for findings of fact, however, because there are no disputed facts as to the actual events that transpired. See Bloodworth v. Hopper, 539 F.2d 1382, 1384 (5th Cir.1976) (where facts are undisputed, resolution of the question as to whether the identification of the defendant is independently reliable concerns only an application of law); see also Cikora v. Dugger, 840 F.2d 893, 896 (11th Cir.1988) (observing that while each relevant factor in determining whether an identification is reliable is a finding of fact, the ultimate determination as to the reliability of the identification is a question of law).
. The three dissenting justices believed that certain nonstatutory mitigating factors were present which a reasonable jury could have relied upon in finding that the mitigating circumstances outweighed the aggravating circumstances. These justices believed that the manner in which the murder was committed was not so extraordinary as to warrant the death penalty. Johnson v. State, 393 So.2d at 1075 (Sundberg, J., concurring in part and dissenting in part). Moreover, they believed that a reasonable jury could have taken into consideration the facts that Johnson was apparently leaving the store when the victim of the murder initiated the shoot-out which culminated in his death and that Johnson demonstrated mercy by not harming any of the other individuals in the store, including Summitt, the eyewitness to the entire events. Id.; id. at 1076 (McDonald, J., dissenting).
. Two justices specially concurred with this holding. See note 10, supra.
. Of the current 7 members on the Florida Supreme Court, two, Chief Justice McDonald and Justice Overton, expressed their view that the jury override was improper on Johnson’s direct appeal. Two other members of the court, Justices Barkett and Kogan, agreed with the majority in Johnson II that the "law of the case” precluded further consideration of the jury override issue, but expressed their disagreement with the prior determination on direct appeal upholding the jury override. 523 So.2d at 163 (Barkett, J., specially concurring) (“I agree that we are bound by the law of the case on the jury override issue. However, I believe there was a reasonable basis for the jury’s recommendation of life and thus that the court originally erred in sustaining the jury override”).
. In Cochran, the Florida Supreme Court rejected the dissent’s arguments that the trial court’s override of the jury’s life recommendation was proper. In so doing, the court noted that all of the cases relied upon by the dissenting justices were decided in 1984 and thus were not indicative of the court’s current posture:
[I]n expounding upon this point to prove that Tedder has not been applied with the force suggested by its language, the dissent draws entirely from cases occurring in 1984 or earlier. This is not indicative of what the present court does, as Justice Shaw noted in his special concurrence in Grossman v. State, 525 So.2d 833, 851 (Fla.1988) (Shaw, J., specially concurring):
During 1984-85, we affirmed on direct appeal trial judge overrides in eleven of fifteen cases, seventy-three percent. By contrast, during 1986 and 1987, we have affirmed overrides in only two of eleven cases, less than twenty percent. This current reversal rate of over eighty percent is a strong indicator to judges that they should place less reliance on their independent weighing of aggravation and mitigation....
Clearly, since 1985 the Court has determined that Tedder means precisely what it says, that the judge must concur with the jury’s life recommendation unless "the facts suggesting a sentence of death [are] so clear and convincing that virtually no reasonable person could differ.” Tedder, 322 So.2d at 910.
Cochran, 547 So.2d at 933.
.This conclusion, of course, does not mean that Johnson is wholly without recourse. The fact that a majority of the current state supreme court has evidenced disapproval of Johnson’s death penalty may well be influential in any state clemency proceedings that might be initiated.
. The fact that various of the state court justices are in disagreement over whether the Ted-der standard was applied appropriately in Johnson’s direct appeal does not implicate a federal constitutional right warranting federal court intervention. Our inquiry is not “whether ‘reasonable people’ could differ over the result here”; it is instead only whether the imposition of the death penalty is irrational or arbitrary. Spaziano v. Florida, 468 U.S. at 467, 104 S.Ct. at 3166. Given the state court factual findings concerning aggravating and mitigating factors present, we cannot conclude that Johnson's death sentence is either irrational or arbitrary.
. We have recognized two caveats to this requirement. First, we have held that the "final” state court decision to be looked to in determining whether the procedural bar was applied is "the last state court that rendered judgment and provided reasons for the judgment." Harmon v. Barton, 894 F.2d at 1273 (emphasis in original) (footnote omitted) (holding that per curiam af-firmance by state appellate court of trial court’s conclusion that the claim raised was procedurally barred resulted in procedural default). Additionally, we have recently held that a petitioner cannot avoid this requirement by withholding a given claim from the state courts. See Parker v. Dugger, 876 F.2d at 1477-78. In other words, in a case in which it is clear that a petitioner’s constitutional claim would be barred under a state procedural rule, a petitioner cannot evade this bar by forsaking an available state remedy in which that bar would be imposed. Id.; see Harris v. Reed, 489 U.S. at —, 109 S.Ct. at 1043 n. 9; id. at -, 109 S.Ct. at 1047 (O’Connor, J., concurring); Toles v. Jones, 888 F.2d 95, 99 (11th Cir.1989).
. Supplemental Appendix 1 (Affidavit of Marvin Johnson).
. Since this opinion was authored, the panel opinion in Toles v. Jones has been vacated for reconsideration by the in banc court. Should *458the in banc court reverse the panel's decision and conclude that ineffective assistance of collateral counsel can satisfy the cause requirement, then, in addition to conducting an eviden-tiary hearing to determine whether federal court intervention is necessary to prevent a fundamental miscarriage of justice, see Section V.C.2, infra, the district court is instructed to hold an evidentiary hearing to determine whether the actions of collateral counsel in this case satisfy the standards established by the in banc court in Toles. On the other hand, should the in banc court adopt the panel’s position in Toles, then no hearing on this issue will be necessary.
. But see note 26, supra. Johnson also argues that one of his attorneys on direct appeal assisted the attorneys handling his collateral attack, and thus that the collateral attorneys could not challenge the effectiveness of one of their own. See Stephens v. Kemp, 846 F.2d 642, 651 (11th Cir.), cert. denied, 488 U.S. 872, 109 S.Ct. 189, 102 L.Ed.2d 158 (1988). Assuming arguendo that there is a genuine issue of fact as to whether counsel on direct appeal was part of the collateral team, the issue now before us relates to the ineffective assistance of counsel at sentencing. There is no contention that any such conflict of interest hindered the challenge to the performance of sentencing counsel.
. Petition at 78; Appendix 4 (Affidavit of Terry Terrell).
. Record at 1619. Not until the day before the sentencing hearing did counsel even file a motion requesting the funds necessary to pay an examining psychologist. Record at 1672. This motion was argued and granted on the morning of the sentencing hearing. Record at 1619-22.
. Record at 1511.
. Record at 1511.
. Record at 1513.
. Record at 1515.
. Record at 1518.
. Record at 1515, 1522.
. Record at 1525.
. Record at 1520-21, 1524-25.
. Petition at 25; Appendix 1 (Affidavit of Dr. Ronald Yarbrough).
. Petition at 122; Appendix 1 (Affidavit of Dr. Ronald Yarbrough).
. See Petition at 123; Appendix 1 (Affidavit of Dr. Ronald Yarbrough).
. On the basis of an in-person interview with Johnson, his review of affidavits from Johnson's friends and family familiar with Johnson’s history and drug abuse, and his review of various other records, Dr. Macaluso detailed Johnson’s history of alcohol and drug intake as follows:
"a. Mr. Johnson is the product of a chemically dependent family.
‘T>. Mr. Johnson had been using various mood altering and addictive drugs over the 25 years preceding his arrest in this case. By the age of 25, he was using class A drugs including marijuana, alcohol, amphetamines, speed and dexadrine along with LSD.
"c. Mr. Johnson began to use qualudes and became addicted to these as early as 1973. "d. Although Mr. Johnson abused drugs before 1973, his severe opiod addiction began after sustaining a severe back injury in 1973. After being prescribed Demoral for a time, the prescription ran out but Mr. Johnson was still in severe pain. He then began using street Morphine and Heroin administered intravenously.
“e. Mr. Johnson subsequently became addicted to opiod narcotics administered intravenously including Demerol, Morphine, Heroin and Dilaudid. This phase of his addiction began in March 1974 and lasted until his arrest in August 1978 with the exception of one year he served in the Tennessee prison system.
“f. Mr. Johnson developed severe tolerance to IV narcotics, being able to inject several hundred-fold the normal dose of narcotic IVs which included Dilaudid, Demerol, Morphine, Percodan and Heroin.
“g. Mr. Johnson concurrently began using Cocaine and subsequently developed addiction and increased tolerance to this drug.
"h. Mr. Johnson overdosed, and/or went through withdrawal on a number of occasions, on and from intravenous Demerol.
"i. Mr. Johnson is and was a severe drug addict. His poly drug addiction is an obsessive, compulsive affliction. The obsession with drugs manifested itself in an adverse impact on his physical well-being. His difficulties included a number of automobile accidents, a number of fights with subsequent broken bones to the hands and arms, and a fractured leg, all of which were sustained under the influence of mood altering and addictive drugs.
"j. Mr. Johnson continued to use mood altering and addictive drugs in an obsessive and compulsive manner, despite or because of increasingly severe legal difficulties. He was able to sustain his destructive and self-defeating addiction by resorting to a continuous pattern of crime in order to obtain narcotics for intravenous consumption.
"k. Mr. Johnson’s uncontrollable use of mood altering and addictive drugs in an obsessive and compulsive manner created psychiatric and emotional difficulties, including four marriages and the development of paranoid ideation and paranoid delusional thinking while under the influence of drugs.
“1. Mr. Johnson developed severe drug tolerance and withdrawal syndromes.
"m. Mr. Johnson continued to use in an obsessive and compulsive manner the addictive drugs Morphine, Dilaudid, Demerol, Ritalin, which were being used intravenously along with Marijuana, Cocaine and Percodan on and about the time of the offense of June 7, 1978.
"n. Hospital records verify that Mr. Johnson was an addict and suffering from withdrawal at the time of his arrest a little less than two months after the offense.”
Petition at 133-35; Appendix 4 (Affidavit of Dr. Peter Macaluso).
. Petition at 123-24; Appendix 1 (Affidavit of Dr. Ronald Yarbrough).
. Id.
. Petition at 124; Appendix 1 (Affidavit of Dr. Ronald Yarbrough).
. Id.
. Petition at 127; Appendix 2 (Affidavit of Dr. Robert A. Fox, Jr.).
. Id.
. Petition at 129; Appendix 2 (Affidavit of Dr. Robert A. Fox, Jr.).
. Petition at 134; Appendix 3 (Affidavit of Dr. Peter Macaluso).
. Petition at 130, 135-36; Appendix 2 (Affidavit of Dr. Robert A. Fox, Jr.); Appendix 3 (Affidavit of Dr. Peter Macaluso).
. Id.
. Petition at 128, 130, 134, 136; Appendix 2 (Affidavit of Dr. Robert A. Fox, Jr.); Appendix 3 (Affidavit of Dr. Peter Macaluso).
. Petition at 135; Appendix 3 (Affidavit of Dr. Macaluso).
. Record at 1766-70.
. This conclusion satisfies the prejudice prong of the familiar two-prong test for evaluating ineffective assistance of counsel claims established in Strickland v. Washington, 466 U.S. 668, 104 S.Ct. 2052, 80 L.Ed.2d 674 (1984). Prejudice in this context is established by proof that there exists a reasonable probability that the result of the proceeding would have been different but for counsel’s performance during the proceedings. Id. at 694, 104 S.Ct. at 2068. "A reasonable probability is a probability sufficient to undermine confidence in the outcome." Id.
. See Record at 1613-16, 1680.
. Record at 1639.
. Record at 1618.
. Record at 1620-21.
. Record at 693, 704, 728-29, 730, 732.
. Record at 964-65.
. See Record at 1271-72.
. See Record at 1474, 1480-81.
. See Record at 1486-87.
. Summitt testified that during the robbery of the pharmacy, Johnson testified to the various drugs he wanted by name, Record at 971-71, thereby creating an inference of Johnson’s breadth of knowledge concerning various narcotics.
.Record at 1399-40 ("Then we asked him [Johnson], ‘Are you familiar with the names of narcotics?’ And he answered that. He said, ‘Yes, I am familiar with some names of narcotics.’ That’s about all we learned from the defendant, but that has some significance in itself. Because, remember, the robber was calling a couple names of drugs. Gary Summitt said he was saying, 'Get that stuff', and calling names which were drugs, but he didn’t remember what the name of it was. That’s very significant, ladies and gentlemen. We didn’t learn much, but we learned a little bit. Please remember those facts, when you go back there to deliberate your verdict.”).
. See Record at 1734 ("He’s got a record of narcotics use and problems, and this thing was to get drugs. That could do it.”).
. Record at 1733.
. That the sentencing judge chose not to rely upon those documents, see Record at 1720, does not militate against the importance of this fact. Defense counsel was obviously aware that the prosecution had submitted this additional evidence to the judge and had no way of knowing until after the judge issued his findings of fact that the judge would not be relying upon that information. Even more significantly, that defense counsel did not try to hide Johnson’s prior record from the judge is evidenced by the fact that defense counsel beseeched the judge to obtain, if not before jury sentencing then at least before final sentencing, a presentence investigation report. See Record at 1618 ("This is really a bifurcated request. We’re saying that we want you to get a P.S.I., of course, but if Your Honor is going to order one, it would seem to me that it ought to be ordered prior to the time that the jury considers the sentencing portion.... If Your Honor elects not to do that, of course, we would ask you to order one before you make your decision.”).
. Our holding, as stated in the text of this opinion, establishes the test for demonstrating a fundamental miscarriage of justice — i.e., that the constitutional error infected the sentencing process to such a degree that the ultimate conclusion was probably factually in error. Our decision to remand in this case does not require that we decide at this time the precise degree of certainty contemplated by the term "probably.”
We recognize that two different measures of "probably" could be applied. In Dugger v. Adams, 489 U.S. at -, 109 S.Ct. at 1217 n. 6, the Supreme Court phrased the inquiry as being that which looks to determine whether the petitioner "probably is 'actually innocent’ of the sentence he or she received.” See also Murray v. Carrier, 477 U.S. at 497, 106 S.Ct. at 2649 (remanding case for inquiry into whether denial of access to allegedly exculpatory material probably resulted in the conviction of an innocent person). The Court’s use of the word “probably” in this context is suggestive of a “reasonable probability” legal standard, and one circuit has so held. Stokes v. Armontrout, 893 F.2d 152, 156 (8th Cir.1989) ("In the penalty-phase context, this exception will be available if the federal constitutional error alleged probably resulted in a verdict of death against one whom the jury would otherwise have sentenced to life imprisonment.”) (quoting Smith v. Armontrout, 888 F.2d 530, 545 (8th Cir.1989)). Adoption of such a standard would also appear to be consistent with the plurality’s suggestion in Kuhlmann v. Wilson, 477 U.S. at 454 & n. 17, 106 S.Ct. at 2627 & n. 17, that a "colorable showing of innocence” may be established by looking to see whether the petitioner can prove by "a fair probability, that in light of all the evidence,” the trier of fact would have reached a different outcome.
We recognize, however, that the Court's use of "probably” could also imply a different legal standard — namely, whether the petitioner can show that it is “more likely than not” that the death sentence would not have been imposed absent the constitutional violation. Cf. Bentley v. United States, 701 F.2d 897 (11th Cir.1983) (per curiam); United States v. Antone, 603 F.2d 566, 568-69 (5th Cir.1979).
At this stage of the proceedings in this case, we expressly decline to adopt either the “reasonable probability” standard or the "more likely than not” standard. We expect, on remand, that the district court will evaluate Johnson's claim under both standards and will set forth any differences that result from the application of the two standards.
. We do not intend for this standard to be viewed as encompassing the universe of scenarios in which claims must be heard to prevent a fundamental miscarriage of justice. We can at least theoretically envision an instance in which a defendant has introduced sufficient evidence to conclusively establish that under no circumstance he or she should be given the death penalty; however, because of an erroneous instruction or some other unconstitutional factor, the deliberative body is unable to so conclude. Thus, notwithstanding the fact that the factual record is complete, the jury, given the unconstitutional error, cannot assess the record appropriately. Such errors, if of sufficient magnitude, would also appear to fall within the scope of the exception as discussed in Adams and Smith.
. In Gardner v. Florida, 430 U.S. 349, 97 S.Ct. 1197, 51 L.Ed.2d 393 (1977), the Supreme Court held that a sentencing judge who imposed the death penalty based in part upon a presentence investigation report that neither the defendant nor his counsel had been permitted to review or contest violated the Eighth and Fourteenth Amendments.
. As already discussed, the Supreme Court in Smith v. Murray suggested the language relied upon by the in banc majority in Moore as being appropriate to determine whether a petitioner is "probably ... actually innocent” of the sentence received. .
. After Moore was originally decided, the Supreme Court decided Teague v. Lane, 489 U.S. 288, 109 S.Ct. 1060, 103 L.Ed.2d 334 (1989). The Supreme Court then vacated the opinion in Moore and remanded for further consideration in light of Teague.
.This particular holding did not command a majority of the participating judges in this case. Twelve judges participated in the Moore decision, and only six judges concurred in the plurality opinion of Judge Cox on this issue. See Moore v. Zant, 885 F.2d 1497 (11th Cir.1989) (plurality opinion by Cox, J., joined by Vance, J., Tjoflat, J., and Fay, J.); id., at 1518 (Edmondson, J., concurring); id., at 1517 (Roney, C.J., specially concurring). Although Judge Hill concurred in the outcome, he did not believe it was necessary to reach this issue. Id. at 1518 (Hill, J., concurring).
. In any event, because only 6 of the participating 12 judges concurred in the abuse of the writ discussion, see supra, note 75, the decision rendered on the "ends of justice” issue is not binding precedent. The breakdown of the participating judges in Moore is directly analogous to the situation presented by the Supreme Court’s decision in Watson v. Ft. Worth Bank & Trust, 487 U.S. 977, 108 S.Ct. 2777, 101 L.Ed.2d 827 (1988). Eight justices participated in Watson. Four justices proposed a fundamental shift in the placement of the burdens of proof in a case involving disparate impact. Id. at 993-1000, 108 S.Ct. at 2788-91 (O’Connor, J., joined by Relinquish C.J., White, J., and Scalia, J.). Although three justices took exception to this proposed shift, id. at 1005-11, 108 S.Ct. at 2795-97 (Black-mun, J., concurring in part and concurring in the judgment, joined by Brennan, J., and Marshall, J.), the final participating justice saw no occasion to reach the issue of burdens of proof in that particular case. Id. at 1011, 108 S.Ct. at 2797 (Stevens, J., concurring in the judgment).
Given this circumstance, two different panels of this court held that the Watson plurality was not binding. See Foster v. Bd. of School Commissioners, 872 F.2d 1563, 1562 n. 8 (11th Cir.1989) ("A plurality opinion is not binding on this Court and we are compelled to follow both our precedent as well as prior Supreme Court precedent”) (citations omitted); Powers v. Alabama Dep’t of Educ., 854 F.2d 1285, 1292 n. 11 (11th Cir.1988) (same), cert. denied, — U.S. -, 109 S.Ct. 3158, 104 L.Ed.2d 1021 (1989).
. To the extent that the Supreme Court’s invocation of "actual innocence” in this context can be traced to Judge Friendly’s views as expressed in his article, Friendly, Is Justice Irrelevant?, Collateral Attack on Criminal Judgments, 38 U.Chi.L.Rev. 142, 146-58 (1970), cf. Kuhlmann v. Wilson, 477 U.S. at 454, 106 S.Ct. at 2627, we note that the broad reading in Moore does not comport with Judge Friendly’s interpretation of this standard. Application of the broad reading in Moore to the guilt/innocence stage would suggest that a petitioner could not establish factual innocence unless he or she can conclusively demonstrate no involvement in the offense. Judge Friendly, on the other hand, adopted a more expansive notion of the proof necessary to raise a sufficient question of factual innocence: under his approach, the prisoner need only establish that there exists "a fair probability that, in light of all the evidence, including that alleged to have been illegally admitted (but with due regard to any unreliability of it) and evidence tenably claimed to have been wrongly excluded or to have become available only after trial, the trier of facts would have entertained a reasonable doubt of his guilt.” Friendly, supra, at 160 (footnote omitted), quoted in Kuhlmann v. Wilson, 477 U.S. at 454 n. 17, 106 S.Ct. at 2627 n. 17.
*474Similarly, the dissent's suggestion that a petitioner cannot establish probable actual innocence of the sentence received unless the petitioner can prove that he or she is not eligible to receive the death penalty is significantly more restrictive than that suggested by either the Supreme Court or Judge Friendly. According to the dissent, a petitioner cannot show that he or she is probably "actually innocent” of the death penalty if “despite the alleged error, a reasonable sentencing body could impose death as a punishment for the crime committed.” Post, at 491-492 (emphasis in original). The relationship of this eligibility test to the Supreme Court’s requirement of probable actual innocence is at best attenuated. For example, if the rationale of the dissent were applied to the guilt phase, the appropriate inquiry would be whether despite the alleged error, a reasonable jury could convict. Under such an inquiry, the fundamental miscarriage of justice standard could be met perhaps only by a petitioner who could demonstrate that the petitioner’s status, e.g., minority, rendered the petitioner ineligible to be convicted. Perhaps the dissent's standard could also be met in the guilt phase by satisfying the standard found in Jackson v. Virginia, 443 U.S. 307, 324, 99 S.Ct. 2781, 2791-92, 61 L.Ed.2d 560 (1979), namely, only "if it is found that ... no rational trier of fact could have found proof of guilt beyond a reasonable doubt.” We are confident that the standard suggested by the dissent is misplaced. The restrictive status standard, i.e., eligibility to be convicted or sentenced, is clearly at odds with the manner in which the phrase has been used both by the Supreme Court and by Judge Friendly. The Jackson v. Virginia standard is used to evaluate a claim of innocence, and not a claim of probable actual innocence.
. Additionally, imposition of such a requirement is wholly inconsistent with Florida law. Under Florida law, the existence of one or more aggravating factors does not, in and of itself, mandate the imposition of the death penalty. Indeed, particularly in cases involving a jury override such as the one before us, the Supreme Court of Florida, even in cases having one or more valid statutory aggravating factors, has shown no reluctance to reverse a death sentence and order life imprisonment in lieu thereof.
Although not necessarily exhaustive, the following is a list of Florida cases in which aggravating factors either existed or were assumed to exist and the Florida Supreme Court reversed a judge’s override of a jury life recommendation and required imposition of a life sentence: Five valid aggravating factors: Ferry v. State, 507 So.2d 1373 (Fla.1987).
Four valid aggravating factors: Masterson v. State, 516 So.2d 256 (Fla.1987); Brookings v. State, 495 So.2d 135 (Fla.1986); Amazon v. State, 487 So.2d 8 (Fla.), cert. denied, 479 U.S. 914, 107 S.Ct. 314, 93 L.Ed.2d 288 (1986); Richardson v. State, 437 So.2d 1091 (Fla.1983); Hawkins v. State, 436 So.2d 44 (Fla.1983); Gilvin v. State, 418 So.2d 996 (Fla.1982); Welty v. State, 402 So.2d 1159 (Fla.1981).
Three valid aggravating factors: Christian v. State, 550 So.2d 450 (Fla.1989), cert. denied, — U.S. -, 110 S.Ct. 1475, 108 L.Ed.2d 612 (1990); Fuente v. State, 549 So.2d 652 (Fla.1989); Freeman v. State, 547 So.2d 125 (Fla.1989); Cochran v. State, 547 So.2d 928 (Fla.1989); Pentecost v. State, 545 So.2d 861 (Fla.1989); Harmon v. State, 527 So.2d 182 (Fla.1988); Brown v. State, 526 So.2d 903 (Fla.1988); Holsworth v. State, 522 So.2d 348 (Fla.1988); Burch v. State, 522 So.2d 810 (Fla.1988); DuBoise v. State, 520 So.2d 260 (Fla.1988); Wasko v. State, 505 So.2d 1314 (Fla.1987); Walsh v. State, 418 So.2d 1000 (Fla.1982); Neary v. State, 384 So.2d 881 (Fla.1980); Jones v. State, 332 So.2d 615 (Fla.1976).
Two valid aggravating factors: Spivey v. State, 529 So.2d 1088 (Fla.1988); Caillier v. State, 523 So.2d 158 (Fla.1988); Perry v. State, 522 So.2d 817 (Fla.1988); Fead v. State, 512 So.2d 176 (Fla.1987); Barclay v. State, 470 So.2d 691 (Fla.1985); Rivers v. State, 458 So.2d 762 (Fla.1984); Thompson v. State, 456 So.2d 444 (Fla.1984); Washington v. State, 432 So.2d 44 (Fla.1983); Cannady v. State, 427 So.2d 723 (Fla.1983); Stokes v. State, 403 So.2d 377 (Fla.1981); Jacobs v. State, 396 So.2d 713 (Fla.1981); Brown v. State, 367 So.2d 616 (Fla. 1979); McCaskill v. State, 344 So.2d 1276 (Fla.1977); Burch v. State, 343 So.2d 831 (Fla.1977); Tedder v. State, 322 So.2d 908 (Fla.1975).
One valid aggravating factor: Huddleston v. State, 475 So.2d 204 (Fla.1985); Herzog v. State, 439 So.2d 1372 (Fla.1983); McKennon v. State, 403 So.2d 389 (Fla.1981); Barfield v. State, 402 So.2d 377 (Fla.1981); Phippen v. State, 389 So.2d 991 (Fla.1980); Williams v. State, 386 So.2d 538 (Fla.1980); Shue v. State, 366 So.2d 387 (Fla.1978); Buckrem v. State, 355 So.2d 111 (Fla.1978); Chambers v. State, 339 So.2d 204 (Fla.1976); Provence v. State, 337 So.2d 783 (Fla.1976), cert. denied, 469 U.S. 969, 97 S.Ct. 2929, 53 L.Ed.2d 1065 (1977).
. Contrary to the dissent’s suggestion, the standard that we enunciate here is not simply a restatement of the traditional prejudice test used to evaluate ineffective assistance of counsel claims found in Strickland v. Washington, supra. Under Strickland, a petitioner can prove ineffective assistance of counsel by, inter alia, showing that counsel’s errors led to the admission of evidence obtained in violation of defendant’s constitutional rights and that absent the admission of this unconstitutionally obtained evidence, there is a reasonable probability that the outcome of the proceedings would have been different. In contrast, at this stage of the proceedings, a federal habeas court is required to consider all reliable, probative evidence in assessing whether the petitioner would have received the death sentence absent the alleged constitutional error. Thus, here, the federal ha-beas court would continue to consider unconstitutionally obtained evidence — so long as its reliability has not been called into question — when making its determination as to whether, given all the factual circumstances and pursuant to the applicable legal standards, the petitioner probably would not have received the death sentence absent the alleged constitutional error.
A further potential difference between Strickland and the inquiry here can be traced to the applicable standard to be invoked when evaluating the petitioner’s proof. Strickland requires a showing that there exists a "reasonable probability” that the result would be different absent the alleged constitutional error; we have expressly declined to decide whether this same standard or a higher standard is necessary when evaluating a claim that has been inexcusably procedurally defaulted. See note 70, supra.
. Johnson’s claim that the abuse of the writ was excused by Ake v. Oklahoma, 470 U.S. 68, 105 S.Ct. 1087, 84 L.Ed.2d 53 (1985), need not be addressed on remand. We conclude that his reliance on Ake is misplaced. We have interpreted Ake's holding as affirming a defendant’s constitutional right to receive competent psychiatric assistance upon proof that the defendant has a substantial, demonstrated need for such assistance. See Messer v. Kemp, 831 F.2d at 960; *479Moore v. Kemp, 809 F.2d 702, 712 (11th Cir.) (in banc), cert. denied, 481 U.S. 1054, 107 S.Ct. 2192, 95 L.Ed.2d 847 (1987). Johnson's claim of ineffectiveness, however, is not that he was denied access to a psychiatrist, but rather that the scope of the psychiatric examination he received was not sufficient because counsel failed to inform his psychiatrist of all relevant facts and because counsel failed to have the psychiatrist conduct a more complete investigation during the one month interval between the advisory sentencing proceedings and the sentencing before the judge. This claim is an ineffective assistance of counsel claim to which Ake adds little. See Adams v. Wainwright, 804 F.2d 1526, 1535 n. 11 (11th Cir.1986), modified on reh’g, 816 F.2d 1493 (11th Cir.1987) (per curiam), rev'd on other grounds, 489 U.S. 401, 109 S.Ct. 1211, 103 L.Ed.2d 435 (1989); cf. Blake v. Kemp, 758 F.2d at 531 (noting the link between minimally effective assistance of counsel and the need for adequate psychiatric evaluations).