¶ 1. This is a review of an unpublished decision of the court of appeals, State v. Carter, No. 94-2001-CR, unpublished slip op. (Wis. Ct. App. Oct. 26, 1995), affirming a judgment of the Circuit Court for Rock County, J. Richard Long, Judge. In resentencing Jimmy Carter, the defendant, the circuit court refused to consider information about events and circum*146stances that occurred after the initial sentencing hearing.
¶ 2. The issue before this court is whether on resentencing a circuit court should consider information about events and circumstances either that the sentencing court was unaware of at the initial sentencing or that occurred after the initial sentencing.1 We conclude that a circuit court should have available to it all information relevant to determining the appropriate sentence. Accordingly, we hold that a circuit court should, in imposing a sentence at a resentencing proceeding, consider all information relevant about a defendant, including information about events and circumstances either that the sentencing court was unaware of at the initial sentencing or that occurred after the initial sentencing.2
¶ 3. This case does not involve sentence modification. Sentence modification involves an entirely different line of authority than resentencing. The purpose of sentence modification is to allow a court to correct a sentence when new factors frustrate the purpose of the sentencing court. State v. Franklin, 148 Wis. 2d 1, 14, 434 N.W.2d 609 (1989). To promote the policy of finality of judgments, strict rules govern the information that can be considered in a request for sentence modification. Id. at 9. There is no finality *147concern when the court imposes a new sentence after the initial sentence has been held invalid.
h-H
¶ 4. The facts are not in dispute. The defendant pled guilty to one count of false imprisonment while armed. Relying on a presentence investigation report which included the results of a psychological test administered to the defendant, the circuit court sentenced the defendant to the maximum term of five years in prison. The defendant filed a postconviction motion under Wis. Stat. § 809.30, requesting a resen-tencing hearing on the ground that the psychological testing methodology was flawed. At the hearing on the motion, the prosecutor, while not conceding error, agreed to a resentencing "in the interests of judicial expediency." The circuit court granted a hearing for resentencing and vacated the initial sentence.3
¶ 5. At the resentencing hearing, the defendant's attorney attempted to introduce information about the defendant that had not existed at the initial sentencing hearing. According to the new information: (1) the defendant had been offered employment to begin upon his release from prison; (2) the defendant had participated in an alcohol treatment program at the prison; (3) the defendant had established a positive record of behavior at the prison with no negative conduct reports; and (4) a previously pending charge against the defendant had been dismissed. Relying on State v. *148Solles, 169 Wis. 2d 566, 485 N.W.2d 457 (Ct. App. 1992), the circuit court refused to consider the information about events and circumstances that occurred after the initial sentencing. The circuit court concluded that at a resentencing proceeding, it could consider only the events and circumstances existing at the time of the initial sentencing.
¶ 6. The court of appeals adopted the analysis presented in Solles and affirmed the judgment of the circuit court.
I — I hH
¶ 7. Our analysis begins with a review of the significant case law on resentencing. A leading case on the constitutional limits to a trial court's powers on resen-tencing is North Carolina v. Pearce, 395 U.S. 711 (1969). In Pearce, which involved a resentencing after an initial conviction was vacated, the Court recognized the power of a resentencing court to impose a greater sentence than the one imposed at the initial sentencing. To assure a defendant the protection against vindictiveness required by due process principles, the Pearce Court concluded that an increase in the sentence must be supported by reasons set forth on the record "based upon objective information concerning identifiable conduct on the part of the defendant occurring after the time of the original sentencing proceeding." Id. at 726.4 The Wisconsin supreme court *149has read the Pearce rule as extending to information about events and circumstances either that the circuit court was unaware of at the initial sentencing or that occurred after the original sentencing. See State v. Stubbendick, 110 Wis. 2d 693, 698-700, 329 N.W.2d 399 (1983) (initial guilty plea and sentence vacated; resentence after reconviction on jury trial; resentenc-ing court properly considers amplified knowledge of defendant's crime and a new presentence report including conduct after initial sentencing); Denny v. State, 47 Wis. 2d 541, 545-46, 178 N.W.2d 38 (1970) (initial conviction vacated; resentence after second trial; resentencing court erred by failing to state on the record reasons based on new information or newly known information warranting increased sentence).
¶ 8. The Wisconsin supreme court has affirmed increased resentences in circumstances distinct from those of Pearce. See State v. Grobarchik, 102 Wis. 2d 461, 471-74, 307 N.W.2d 170 (1981), and State v. Martin, 121 Wis. 2d 670, 686-88, 360 N.W.2d 43 (1985). In Grobarchik and Martin, unlike in Pearce, neither the resentencing court nor the supreme court was asked to consider the defendant's conduct after the original sentencing. The court in Grobarchik and Martin concluded that the Pearce rule requiring that a court state new information warranting an increased sentence was not *150applicable and distinguished Pearce as a case involving an invalid conviction rather than only an invalid sentence. The court held in Grobarchik and Martin that when an initial sentence cannot be carried out because dt was not authorized by law, an increased sentence is permissible only when "based upon a desire to implement the original dispositional scheme as manifested by the record in the first sentencing proceeding." Grobarchik, 102 Wis. 2d at 474; Martin, 121 Wis. 2d at 687.
¶ 9. In Grobarchik and Martin, as in Pearce, the court was concerned that a resentencing court not penalize a defendant for exercising postconviction rights to challenge a sentence. The court concluded that compelling a resentencing court to implement the original dispositional scheme, rather than allowing it to re-examine the relevant information available at the initial sentencing and exercise its independent judgment, protected a defendant from a sentence tainted by vindictiveness. Grobarchik, 102 Wis. 2d at 474; Martin, 121 Wis. 2d at 687. Grobarchik and Martin thus extended protections similar to those in Pearce to a narrow class of cases apparently thought not to fall within the Pearce rule.
¶ 10. Grobarchik and Martin had no cause to, and did not, address the limits to a circuit court's consideration of new information at all resentencings which follow valid convictions but invalid sentences. Grobarchik and Martin were concerned with a resen-tencing court's authority to impose an increased sentence on a basis other than that of the defendant's conduct occurring after the original sentencing.
¶ 11. In State v. Pierce, 117 Wis. 2d 83, 342 N.W.2d 776 (Ct. App. 1983), the circuit court imposed an invalid sentence, a term of probation consecutive to *151an existing probation term. On resentencing, the circuit court vacated the invalid probationary term and sentenced Pierce to two years in prison. Id. at 85. The stated reason for the increased sentence was Pierce's arrest for two batteries committed after the initial sentencing. Citing Pearce and Stubbendick, the court of appeals held that the batteries were new information that provided adequate reason for the increased sentence and that the circuit court was not motivated by vindictiveness. The court of appeals did not refer to the requirement set forth in Grobarchik or Martin that the original dispositional scheme be followed in some resentencings.
¶ 12. In 1992, the court of appeals decided Solles, 169 Wis. 2d 566, in which resentencing was required because the initial sentence was found invalid. Seeking to have the circuit court impose a lesser sentence, Sol-les wanted to introduce evidence at the resentencing hearing of his good conduct in prison during the previous 14 years, as well as character references and evidence of his achievements and employment prospects. The court of appeals concluded that this information could not be considered when resentencing resulted from an invalid sentence. According to the court of appeals, the requirement in Grobarchik and Martin that the resentencing court implement "the original dispositional scheme as manifested by the record in the first sentencing proceeding" meant that the resentencing court was limited to considering only the circumstances existing at the time of the initial sentencing. Solles, 169 Wis. 2d at 569.
¶ 13. In the Solles case the State argued, much as it does in the present case, that Pierce is inconsistent with Grobarchik and Martin and should be overruled. According to the State, the court of appeals distin*152guished Pierce in Solles, concluding that in Pierce the court of appeals had faced the question of possible vindictiveness by a resentencing court, expressed in an increased sentence, whereas in Solles it faced the question of a resentencing court imposing a lesser sentence.5
¶ 14. According to the decisions of the court of appeals, on resentencing (when the initial conviction is valid but the sentence is not), a circuit court may use new information unfavorable to the defendant to impose a greater sentence than initially imposed, Pierce, but may not usé new information favorable to the defendant to impose a lesser sentence than initially imposed, Solles. The parties agree, and we conclude, that this position is unsupportable.
HH l-H hH
¶ 15. With this background we now turn to the issue in this case. The defendant asks the court to overrule the court of appeals' decision in Solles and allow a resentencing court to consider new information to *153reduce or increase an initial sentence. The State asks the court to adhere to Solles, overrule Pierce, and direct that a resentencing court consider neither favorable nor unfavorable information about events or circumstances occurring after the initial sentencing.
¶ 16. The State urges the court to recognize two types of resentencing proceedings: (1) a resentencing proceeding after the initial conviction has been invalidated and a new conviction is entered; and (2) a resentencing proceeding after the initial sentencing has been invalidated but the initial conviction is valid.
¶ 17. The State reasons that when resentencing is required after a conviction is vacated there is no longer any basis for the initial sentence and a circuit court should treat the resentencing as a totally new proceeding. In such cases, according to the State, resentencing is to be viewed as the initial sentencing and all relevant information available at the time of resentencing may be considered. The State reads Pearce, Denny and Stubbendick as supporting this result.
¶ 18. The State distinguishes Pierce, Solles and the present case as cases falling into the second category, in which the initial conviction stands and only a resentencing is required. According to the State, a circuit court conducting a resentencing proceeding after a valid initial conviction can consider only information existing at the time of the initial sentencing, because a circuit court on resentencing sits in the position of the circuit court immediately after the valid conviction.
¶ 19. The State further argues that in Pierce, Sol-les and the present case, although the sentences were invalid, resentencing was not required to correct errors infecting the entire sentencing proceedings. The State urges that under these circumstances only information *154available at the initial sentencing should be considered at the resentencing.
¶ 20. The State therefore urges that we adhere to the Solles decision and hold that Solles controls the case at bar. Acknowledging the inconsistency between Solles and Pierce, the State urges us to overrule Pierce as wrongly decided and in conflict with Martin and Grobarchik. Furthermore, the State asserts that if Pierce were to remain the law, fairness dictates that a resentencing court should also be able to consider information reflecting favorably on a defendant to support a reduced sentence as in the present case. Brief for State in Solles at 7; Brief for State in Carter at 20.
¶ 21. In sum, the State contends that a resen-tencing court should consider favorable or unfavorable information about a defendant which relates to events and circumstances occurring after the initial sentencing only when the resentencing follows an invalid conviction but that a resentencing court may not consider such information when the resentencing results from an invalid sentence following a valid conviction.
¶ 22. We are not persuaded by the State's position.
¶ 23. First, we cannot discern a generally applicable distinction between resentencing following an invalid conviction and resentencing solely to correct an invalid sentence. The nature of the error necessitating the resentencing does not bear on the scope of information that a resentencing court should consider. When a resentencing is required for any reason, the initial sentence is a nullity; it ceases to exist. The role of the resentencing court is the same regardless of the procedural history leading to the resentencing. We reiterate what the Leonard court stated in 1968: "[W]e see no *155good reason for distinguishing those cases [in which the conviction was invalid] from situations involving only resentencing." State v. Leonard, 39 Wis. 2d 461, 465, 159 N.W.2d 577 (1968).6
¶ 24. Second, for the same reasons stated above we decline to distinguish a resentencing based on errors infecting the entire sentencing proceedings from other resentencings.
¶ 25. Third, we do not read Grobarchik and Martin as applicable to resentencing generally. Grobarchik and Martin require that a resentencing court state on the record the reasons for the increased sentence and that the reasons be based on a desire to implement the initial sentencing court's original dispositional scheme. *156Grobarchik and Martin address an unusual fact situation. Without revisiting these cases, we now clarify that they are limited to their facts. The rule established in those cases applies only when the initial conviction is valid, the initial sentence is invalid, the resentencing court has no new information or newly known information, and the resentencing court seeks to impose a greater sentence. We reiterate that the rule of Grobarchik and Martin is to assure compliance with the due process principle that vindictiveness must play no role in resentencing. A defendant must not be penalized for, or dissuaded from, exercising the right to challenge an invalid sentence or conviction. See Denny, 47 Wis. 2d at 544.
¶ 26. Finally, we conclude that Pierce is consistent with the principles we enunciate today and that Solles is not. Solles does not comport with the role of a sentencing court and we therefore overrule it.
¶ 27. The law is clear that to fashion an appropriate sentence a sentencing court should consider all relevant and available information. The primary considerations in imposing a sentence are the gravity and nature of the offense (including the effect on the victim), the character of the defendant and public safety.7 The court has emphasized the importance of a sentencing court's consideration of a broad range of *157information at sentencing.8 As the Tenth Circuit Court of Appeals stated: "In the exercise of the difficult discretionary function of imposing sentence upon a convicted or confessed criminal, the sentencing judge is entitled to all the help he [or she] can get." United States v. Majors, 490 F.2d 1321, 1322 (10th Cir. 1974).
¶ 28. The circuit court's role in determining an appropriate sentence is the same whether the proceeding is an initial sentencing or a resentencing. In determining an appropriate sentence, both the sentencing and resentencing courts should have accurate, complete and current information.
¶ 29. The State claims that two policy considerations explained by the Solles court support the Solles result. Solles 169 Wis. 2d at 571. First, the State contends that a defendant who uses a resentencing proceeding to introduce new information resulting in a lesser sentence would essentially receive a windfall unavailable to other defendants. We conclude that it cannot be considered a windfall for a defendant to receive a sentence based on complete information. A resentenced defendant is in no better position than any other defendant who is afforded the opportunity to present all relevant information available at the time of valid sentencing. Furthermore, the new information *158can result in either an increase or a decrease in a defendant's sentence.
¶ 30. Second, the State argues that allowing a resentencing court to consider events and circumstances occurring after the initial sentencing usurps the function of the parole board. This argument confuses the roles of the resentencing court and the parole board. The function of the resentencing court is to impose an appropriate penalty within the parameters prescribed by the legislature. The role of the parole board derives from the function of the executive to grant paroles and pardons. Wis. Stat. ch. 304. Some of the factors a court considers when imposing a sentence on a convicted defendant are similar to the factors considered by the parole board when deciding whether to grant parole. The parole board does not, however, act until after a valid sentence is imposed on a convicted defendant. Therefore, its role is not usurped if á resen-tencing court considers new information relevant to imposing a valid sentence after an initial sentence has been vacated.
[S3
¶ 31. For the reasons stated, we hold that a circuit court should, in imposing a sentence at resentencing, consider all information relevant about a defendant, including information about events and circumstances either that the sentencing court was unaware of at the initial sentencing or that occurred after the initial sentencing. The decision of the court of appeals is therefore reversed, and the cause is remanded to the circuit court for resentencing.
By the Court. — The decision of the court of appeals is reversed and the cause is remanded.
This issue is a question of law which this court determines independently of the circuit court or court of appeals, benefiting from the analyses of those courts.
In addition to any constitutional requirements set forth in North Carolina v. Pearce, 395 U.S 711 (1969), and its progeny, a resentencing court is required under state law to explain the basis for its sentence on the record. McCleary v. State, 49 Wis. 2d 263, 280-82, 182 N.W.2d 512 (1971); In re Felony Sentencing-Guidelines, 120 Wis. 2d 198, 201, 353 N.W.2d 793 (1984).
On the agreement of the parties, the circuit court did not consider psychological reports at the resentencing hearing. We do not decide whether vacating the initial sentence and granting a new sentencing hearing were required. We treat the present case, as do the defendant and the State, as one involving a resentencing following an invalid initial sentence.
Prior to Pearce, the Wisconsin supreme court addressed resentencing in State v. Leonard, 39 Wis. 2d 461, 473, 159 N.W.2d 577 (1968). In Leonard, the court concluded that a circuit court may impose an increased sentence on resentencing if (1) events warranting an increased penalty occur or come to the resentencing court's attention subsequent to the imposition of the initial sentence; and (2) the resentencing court affirmatively *149states in the record its ground for increasing the sentence. In Leonard the court disclaimed any distinction between a resen-tencing necessitated by an invalid conviction and one necessitated only by an invalid sentence. Pearce has been modified by subsequent decisions of the United States Supreme Court. See, e.g., Jonathan D. Youngwood, Note, The Presumption of Judicial Vindictiveness in Multi-Count Resentencing, 60 U. Chi. L. Rev. 725, 729-36 (1993). None of the modifications bears on the issues presented in this case.
The court of appeals was not persuaded by this distinction and pointed out that if Pierce were before it as "an original matter," it probably would not have ruled the same way. Solles, 169 Wis. 2d 566, 571 n.3, 485 N.W.2d 457 (Ct. App. 1992). In deciding Solles the court of appeals was aware of the two cases' contradictory treatment of new information but declined to overrule Pierce in the belief that it was bound to adhere to its published decisions. Solles, 169 Wis. 2d at 570. The question of whether the court of appeals has the power to overrule one of its published decisions has been raised in a number of cases. In Cook v. Cook, 208 Wis. 2d 167, 560 N.W.2d 246 (1997), of even date, we hold that the court of appeals may not overrule, modify or withdraw language from a previously published decision of the court of appeals.
Consistent with Leonard, the federal courts of appeals which have considered the issue have failed to find in Pearce any distinction between invalid conviction and invalid sentence. For example, the seventh circuit has stated: "We see no reason to distinguish, on the basis of [the Pearce] rationale, the case of resentencing after retrial from the case of resentencing after vacation of an illegal sentence. The same threat of vindictiveness is present, and the same safeguards are necessary." United States v. Jefferson, 760 F.2d 821, 825 (7th Cir. 1985). See also United States v. Vontsteen, 950 F.2d 1086, 1089 n.2 (5th Cir. 1992) ("We have found no case that expressly limits Pearce in this way.") (collecting cases). In 1980 the American Bar Association recommended that there be no increased sentences on resentencing and that "this limitation should be observed regardless of whether the new sentence follows a reversal of the underlying conviction or only a remand of the prior sentencing decision at the instance of the defendant." ABA Criminal Justice Standard 18-4.9 at p. 18.323 and Commentary at p. 18.325-26 (2d ed. 1980). In 1994 chapter 18 on sentencing was extensively rewritten. Section 18-4.9, addressing resentencing, has been eliminated.
State v. Ogden, 199 Wis. 2d 566, 571, 544 N.W.2d 574 (1996) ("[Slentence must at the very least be based on the 'gravity of the offense, the character of the offender and the need for the protection of the public.'"); Rosado v. State, 70 Wis. 2d 280, 288, 234 N.W.2d 69 (1975) ("It is well settled that all information relevant to sentencing should be brought to the attention of the trial judge.").
See, e.g., Elias v. State, 93 Wis. 2d 278, 285, 286 N.W.2d 559 (1980) ("The responsibility of the sentencing court is to acquire full knowledge of the character and behavior pattern of the convicted defendant before imposing sentence."). See also Wasman v. United States, 468 U.S. 559, 563 (1984) ("The sentencing court or jury must be permitted to consider any and all information that reasonably might bear on.the proper sentence for the particular defendant, given the crime committed.").