[¶ 1.] Lee Thomas (Thomas), contestant, appeals the trial court’s order admitting his great-uncle’s last will and testament to probate and denying his objections. We affirm.
PACTS
[¶ 2.] Gilbert Dokken (Dokken) died August 23, 1997 at the age of 82. He was survived by his sister, Myrtle Cross (Myrtle) and his grandnephew, Thomas.
[¶ 3.] Dokken was born on October 17, 1915 in North Dakota. He worked on his father’s farm near Towner, North Dakota until he entered the army, where he was educated as an aircraft armorer. Dokken was honorably discharged as a corporal from the Army in 1945 at which time he returned to the Towner area. In 1948, Dokken was diagnosed with dementia praecox paranoid type, and was placed under the care of the Veterans Administration at its Fort Meade Hospital. In addition to the dementia praecox, in 1956 Dokken was diagnosed with schizophrenia. At this time, the Department of Veterans Affairs (VA) determined Dokken to be incompetent for VA purposes.
[¶ 4.] From 1948 until his death, Dokken spent many years both in institutional and residential supervised care. In 1967 Dokken’s brother, Melvin Dokken, was appointed his VA guardian in North Dakota. In 1972 Dokken was placed in foster home care near Spearfísh, South Dakota under the Community Home Care Program of Fort Meade. He remained at the foster home until his death. From 1978 through November of 1985, the foster home was owned and operated by Douglas and Mic-kaela Hyde.
[¶ 5.] From the late 1970s until Dokken’s death, VA social workers visited with him and other VA officials made yearly field examinations of his mental and financial status. Dokken suffered primarily the negative symptoms of schizophrenia evidenced by social isolation, limited interpersonal relationships, and withdrawal. He often refused to converse with or answer questions from people he did not know and trust. Although quiet by nature and because of his mental status, he would readily converse in a responsive manner with those he knew well and trusted, such as the Hydes and the other veterans who resided at the Hyde home. He readily kept up on the events of the outside world by frequent watching of television and regularly reading newspapers and magazines.
(¶ 6.] Dokken’s brother Melvin passed away in 1981. On December 2, 1982, Dokken’s brother-in-law, Kenneth Cross (Kenneth), was appointed VA guardian in South Dakota. Kenneth remained Dokken’s guardian until 1988 when First Bank of South Dakota was appointed as successor guardian.
[¶ 7.] In late 1984 or early 1985, Dokken told the Hydes he wished to go to his hometown of Towner, North Dakota, to view the family farm and to have the Dokken family attorney, Joseph Mclntee (Mclntee), make his will. The Hydes *490promptly relayed this request to the Grosses. There was a substantial delay in complying with Dokken’s wishes until July 1985 when the Crosses arrived at Spearfish from their home in Washington for their annual visit with Dokken. The Crosses drove Dokken to Towner and on July 12, 1985, Mclntee drafted and Dokken executed, Dokken’s last will and testament.
[¶ 8.] Dokken’s will left his entire estate of over $400,000 to Myrtle.1 If Dokken’s will had not been executed, contestant Thomas would have inherited one-half of Dokken’s estate by intestate succession. Thomas objected to the will claiming Dokken lacked the testamentary capacity to execute it. Thomas also claimed undue influence was exerted upon Dokken by the Crosses. The trial court found insufficient evidence to establish lack of testamentary capacity or undue influence. Finally, Thomas objected to the testimony of the Crosses’ expert, Dr. Stephen Manlove, which was allowed by the trial court. Dr. Manlove relied upon the principles of forensic psychiatry to determine Dokken was mentally competent to execute a will. On January 5, 1998, the Eighth Judicial Circuit, Lawrence County, ordered admission of Dokken’s will to formal probate.
[¶ 9.] Thomas appeals the trial court’s decision, raising the following issues for our consideration:
1.Was the trial court clearly erroneous in finding Thomas failed in his burden of proof to establish Dokken lacked testamentary capacity to execute a will on July 12,1985.
2. Was the trial court clearly erroneous in finding Thomas failed in his burden of proof to establish Dokken was unduly influenced in executing his will dated July 12,1985.
3. Did the trial court abuse its discretion in admitting the expert testimony of Dr. Stephen Manlove.
STANDARD OF REVIEW2
[¶ 10.] We review a trial court’s findings as to testamentary capacity under the clearly erroneous standard. Matter of Estate of Long, 1998 SD 15, ¶ 9, 575 N.W.2d 254, 255 (citing In re Guardianship and Conservatorship of Lanning, 1997 SD 81, ¶ 9, 565 N.W.2d 794, 795). Likewise, the issue of whether undue influence exists is a question of fact for the trial court to determine. Matter of Estate of Unke, 1998 SD 94, ¶ 11, 583 N.W.2d 145, 147-48 (citing In re Estate of Madsen, 535 N.W.2d 888, 891 (S.D.1995)). In Unke, we stated:
We will not set aside a trial court’s findings of faet unless they are clearly erroneous. In re Estate of Elliott, 537 N.W.2d 660, 662 (S.D.1995) (citing SDCL 15-6-52(a); In re Estate of Till, 458 N.W.2d 521, 523 (S.D.1990); In re Estate of Weickum, 317 N.W.2d 142, 145 (S.D.1982); In re Estate of Hobelsberger, 85 S.D. 282, 289, 181 N.W.2d 455, 458 (1970)). A trial court’s finding is clearly erroneous if, “after reviewing the entire evidence, we are left with the *491definite and firm conviction that a mistake has been made[.]” Id. (citations omitted). All conflicts in the evidence must be resolved in favor of the trial court’s determinations. Till, 458 N.W.2d at 523. “The credibility of the witnesses, the weight to be accorded their testimony, and the weight of the evidence must be determined by the trial court and we give due regard to the trial court’s opportunity to observe the witnesses and the evidence.” Elliott, 537 N.W.2d at 662. We review any documentary or deposition evidence under a de novo standard of review. Id.
Id. “That this Court may have found the facts differently had we heard the testimony is no warrant for us to substitute our judgment for the trial court’s carefully considered findings.” Long, 1998 SD 15, ¶ 9, 575 N.W.2d at 256 (quoting Lanning, 1997 SD 81, ¶ 9, 565 N.W.2d at 796).
[¶ 11.] In State v. Edelman, 1999 SD 52, ¶ 4, 593 N.W.2d 419, 421, we stated:
Expert testimony admissibility is governed by SDCL 19-15-2 (Rule 702). It is well settled that the trial court has broad discretion in regard to the admission of expert testimony. State v. Bachman, 446 N.W.2d 271 (S.D.1989); United States v. Purham, 725 F.2d 450 (8thCir1984). Absent a clear showing of abuse of discretion, the trial court’s decision will not be reversed. State v. Logue, 372 N.W.2d 151 (S.D.1985).
ANALYSIS AND DECISION
[¶ 12.] 1. Was the trial court clearly erroneous in finding Thomas failed in his burden of proof to establish Dokken lacked testamentary capacity to execute a will on July 12, 1985.
[¶ 13.] SDCL 29A-2-501 provides: “[a]n individual eighteen or more years of age who is of sound mind may make a will.” Sound mind, for purposes of testamentary capacity, has been defined as:
One has a sound mind, for the purposes of making a will, if, without prompting, he is able ‘to comprehend the nature and extent of his property, the persons who are the natural objects of his bounty and the disposition that he desires to make of such property.’ In re Estate of Podgursky, 271 N.W.2d 52, 55 (S.D.1978). Soundness of mind, for the purposes of executing a will, does not mean ‘that degree of intellectual vigor which one has in youth or that is usually enjoyed by one in perfect health.’ Petterson v. Imbsen, 46 S.D. 540, 546, 194 N.W. 842, 844 (1923). Mere physical weakness is not determinative of the soundness of mind, In re Estate of Anders, 88 S.D. 631, 636, 226 N.W.2d 170, 173 (1975); and it is not necessary that a person desiring to make a will ‘ should have sufficient capacity to make contracts and do business generally nor to engage in complex and intricate business matters.’ Petterson, 46 S.D. at 546, 194 N.W. at 844.
Long, 575 N.W.2d at 257-58 (emphasis in original) (other citations omitted).
[¶ 14.] The fact a guardian has been appointed to take care of a testator’s estate does not, by itself, invalidate a will because of lack of testamentary capacity. Id. at 258 (citing In re Estate of Hastings, 347 N.W.2d 347, 350 (S.D.1984)). In addition, “the fact that a testator is ill or suffering from a disease does not necessarily prevent that testator from possessing testamentary capacity.” Id. (citing In re Estate of Linnell, 388 N.W.2d 881, 884 (S.D.1986)). The testator may lack mental capacity to such an extent that according to medical science he is not of sound mind and memory, and nevertheless retain the mental capacity to execute a will. Podgursky, 271 N.W.2d at 57 (citing Keely v. Moore, 196 U.S. 38, 25 S.Ct. 169, 49 L.Ed. 376 (1904)). “Testamentary capacity is not determined by any single moment in time, but must be considered as to the condition of the testator’s mind a reasonable length of time before and after the will is execut*492ed.” Long, 575 N.W.2d at 258 (citing Landing, 1997 SD 81, ¶ 11, 565 N.W.2d at 796 (citing In re Estate of Nelson, 330 N.W.2d 151, 155 (S.D.1983))).
[¶ 15.] Thomas claims Dokken could not talk about his estate, heirs and the disposition of his estate “without prompting.”3 Thomas points to the testimony of Robert Bender, a VA social worker who began visiting and evaluating Dokken in March 1978. Bender testified that when prompted about a fact such as “your sister is Myrtle Cross,” Dokken would agree. Thomas also points to the testimony of Michael Mclntee, the son of the attorney who drafted Dokken’s will on July 12, 1985.4 Michael testified his father would always sit alone with the testator and go over questions as to his heirs, property, etc. Michael further testified his father would write this information down on a yellow legal pad and keep it with the office copy of the will. Thomas claims an examination of the information Mclntee wrote on his yellow pad clearly shows Dokken was either prompted with all of the answers to the questions posed by Mclntee or that the information was provided by Kenneth.
[¶ 16.] Thomas contends at one point, Dokken doubted Myrtle was his sister, but Mclntee’s notes indicated she was the only relative Dokken named. Moreover, Thomas points to the fact at another time Dokken thought his deceased brother, Neis Dokken, was still alive and living in Town-er, North Dakota. Thomas asserts that while the Mclntee notes indicate Dokken wanted everything to go to Myrtle or to her children if she did not survive, there is no evidence Dokken ever knew Myrtle had children, much less knew their names.
[¶ 17.] Finally, Thomas, claims Dokken would have had no idea of the name of the bank and its address where his will would be kept. Mclntee’s notes indicate the will would be kept in a safe deposit box at Rainier Bank, Williams Street and George Washington Way, Richland, Washington 99352. Thomas contends the only person with this information was Kenneth. Thomas argues this point alone is clear evidence of the fact Dokken was either “prompted” with the information for his will or that Kenneth was in the room with Mclntee and Dokken during the execution of the will.
[¶ 18.] We find Thomas’ argument that Dokken was prompted into executing his will is without merit. Mclntee was a logical choice by Dokken to draft the will. Mclntee was the long time family attorney who had handled at least two estates of Dokken’s brothers. In addition, Mclntee had been the attorney in the VA guardianship of Dokken in North Dakota prior to its being terminated in 1982 due to Melvin Dokken’s death and subsequently being reestablished in South Dakota.
[¶ 19.] The depositions of Gloria Coyne and Michael, the two attesting witnesses to the execution of Dokken’s July 12, 1985 will, tend to refute Thomas’ allegations. Their lack of specific memory as to anything being amiss concerning Dokken’s execution and their attestation of the will points to a normal execution process, not one out of the ordinary where they were being asked to witness a will of a person not competent to execute it.5 Michael testified to the procedures his father used in preparation of a will, and explained his father would have noted if another person was present in the room. Michael further testified it was common for aged clients to bring documentary evidence with them to *493specify such information as social security numbers, places and amount of financial accounts and land descriptions. The ultimate storage location of a will is not an essential element of testamentary capacity. Either Mclntee or Dokken could have exited the interview room and obtained this information from Kenneth whom as Dokken’s guardian, was the logical person to hold the will. Per his office policy, Mcln-tee retained a copy of the will and stapled it to his interview notes with Dokken.
[¶ 20.] Thomas also argues Dokken lacked testamentary capacity to execute his will because the VA classified him as being “incompetent for VA purposes.” This classification was based in part on the fact Dokken had been diagnosed with schizophrenia. From the late 1970⅛ to the date of his death, VA social workers visited with Dokken and made yearly field examinations of his mental and financial status. From 1982 to 1997, the VA Field Examination Reports consistently state Dokken did not have the ability to handle his own financial affairs. The VA Field Examination Report dated April 7, 1983 states:
The veteran understood that he has a guardian who handles his funds.. He had no knowledge of his actual income and estate and indicated that it was satisfactory with him that Kenneth Cross handle his financial affairs. The veteran showed no emotion when I informed him that he had an estate of approximately $150,000.... The veteran does not seem to have any understanding as to the actual value of the dollar and probably functions out of the pattern and habit with the limited amount of money given him at this time.
[¶ 21.] Although Dokken was found incompetent for VA purposes, this does not mean he was lacking in testamentary capacity. At trial, Dr. Manlove explained the differences between the two competency standards:
To be competent for VA purposes, one has to be able to manage his or her own affairs, including disbursement of funds without limitations. For testamentary competence, one needs to know the extent of their estate and assets and the natural heir of their money. They don’t need to be able to manage it, they don’t need to be able to disburse their funds without limitations.
Dr. Manlove also testified, from a medical standpoint, a person could be deemed incompetent for medical or for VA purposes, but still be competent to make and execute a will. A testator may lack mental capacity according to a medical standard, but still retain the mental soundness to execute a will. Podgursky, 271 N.W.2d at 57 (other citations omitted). Moreover, in Podgursky, we held a trial court’s finding was not “clearly erroneous” that a testator, who had previously been determined incompetent for VA purposes, had testamentary capacity to make a will. Podgursky, 271 N.W.2d at 58.
[¶22.] While we note several VA field examiners who made brief annual visits to Dokken stated Dokken did not have the ability to understand his income, estate and expenses, the Crosses produced countering evidence to the trial court. Hyde testified Dokken knew he had an estate, but may not have known its exact value. Hyde also testified Dokken was aware Kenneth was his guardian who took care of his financial affairs. Dokken and other veterans spoke about their estates amongst themselves. Dokken may have become interested in making a will after a conversation with the other veterans on the subject. Hyde also testified Dokken was conservative and did not have problems managing his money.6 Finally, the Hydes were also confident Dokken knew who his relatives were. Dokken knew his sister Myrtle; in fact, Mr. Hyde testified Dokken called her “Myrt.”
*494[¶ 23.] Bender testified that based on his knowledge and understanding of Dokken, he believed Dokken knew who his relatives were, and had the ability to understand he had an estate.7 Bender also testified that while it was difficult at times to converse with Dokken because he was not one to do a lot of conversing, he would always responsively answer Bender’s questions. Dokken’s answers were logical and he was very rational during his conversations with Bender.
[¶ 24.] Moreover, the trial court determined the professional opinion and testimony of Dr. Manlove supported the conclusion Dokken was competent on July 12, 1985 to make and execute a will. Dr. Manlove testified that based on his evaluation of the records and interviews with individuals who knew Dokken personally, his professional opinion to a reasonable degree of medical certainty was that Dokken possessed the abilities consistent with testamentary capacity at the time he executed his will. Dr. Manlove concluded Dokken had not suffered from psychotic symptoms during the years of 1978-1990. Dr. Manlove testified that during these years, Dokken suffered from the negative symptoms of schizophrenia.During his testimony, Dr. Manlove explained schizophrenics who display negative symptoms tend to become isolated and have a difficult time maintaining interpersonal relationships. Therefore, due to schizophrenia, Dokken was not able to open up to unfamiliar people and would be reluctant to share information about himself. Dr. Manlove testified it appeared the value of his estate was not of great concern to Dokken. The Crosses claim Dokken’s failure to keep exact track of the value of his estate should not be interpreted as an inability to understand the value. We agree. Many persons of normal intelligence who possess more than minimal assets would be hard pressed to give an exact statement of their wealth if asked to do so without some background research. Although the VA field examiners gave negative reports of Dokken during their visits, the Hydes, Bender and Dr. Manlove all testified that Dokken’s personality would explain the negative reports. The VA field examiners only visited Dokken once a year and the visits were brief, approximately 15 to 20 minutes long. ,
[¶ 25.] In this case, we recognize some of the evidence as to Dokken’s testamentary capacity is contradictory. However, it was for the trial court to select, from the conflicting evidence, that which it believed to be true. Podgursky, 271 N.W.2d at 56; Estate of Williams, 88 S.D. 55, 215 N.W.2d 489, 490 (1974). It, not this Court, is the trier of the facts. Podgursky, 271 N.W.2d at 56.
It is also well-settled that the credibility of witnesses and weight of evidence is for the trial court and that a reviewing court accepts that version of the evidence, including the inferences that can be fairly drawn therefrom, which is favorable to the trial court’s determination.
Id. (citing Nicolaus v. Deming, 81 S.D. 626, 139 N.W.2d 875 (1966); Schmidt v. Earl, 83 S.D. 245, 158 N.W.2d 184 (1968); Larson v. Syverson, 84 S.D. 31, 166 N.W.2d 424 (1969)). “Contestants of a will have the burden of establishing lack of testamentary intent or capacity, undue influence, fraud, duress, mistake, or revocation.” SDCL 29A-3^407. There was sufficient evidence to justify the trial court’s decision finding Dokken possessed testamentary capacity to execute his will. The trial court’s decision was not clearly erroneous.8
*495[¶ 26.] 2. Was the trial court clearly erroneous in finding Thomas failed in his burden of proof to establish Dokken was unduly influenced in executing his will dated July 12, 1985.
[¶27.] Under our settled law, to establish the existence of undue influence a will contestant must prove four elements by a preponderance of the evidence:“(l) decedent’s susceptibility to undue influence; (2) opportunity to exert such influence and effect the wrongful purpose; (3) a disposition to do so for an improper purpose; and (4) a result clearly showing the effects of undue influence.” Unke, 1998 SD 94, ¶ 12, 583 N.W.2d at 148 (citing Elliott, 537 N.W.2d at 662-63).
[¶ 28.] A presumption of undue influence arises “when there is a confidential relationship between the testator and a beneficiary who actively participates in preparation and execution of the will and unduly profits therefrom.” Id. ¶ 13 (quoting Madsen, 535 N.W.2d at 892). lAflien this presumption arises, the burden shifts to the beneficiary to show he took no unfair advantage of the decedent. Id. (citing In re Estate of Metz, 78 S.D. 212, 222, 100 N.W.2d 393, 398 (1960)). However, the ultimate burden remains on the contestant to prove the elements of undue influence by a preponderance of the evidence. Id. (citing Madsen, 535 N.W.2d at 893). We recently clarified the undue influence test in Unke by stating: “the burden of going forward with the evidence in an undue influence case does not shift to the *496beneficiary unless a presumption of undue influence is established. ” Id. (emphasis in original).
[¶ 29.] Thomas claims there is evidence of undue influence in a March 3, 1986 letter to the VA. In this letter, Kenneth wrote of his wife’s cancer surgery in 1985 and the extreme expense involved. After four years as guardian, Kenneth wrote in the letter he was going to recoup expenses for being Dokken’s guardian. Kenneth explained it was too expensive for him to make annual trips to South Dakota from the State of Washington to visit Dokken and that he had tried in vain to convince Dokken to move to Washington. Thomas points to the fact that Kenneth wrote, “Last year we were able to get him to agree to a 3 day trip to Towner [North Dakota].” Thomas argues this language is evidence Dokken was prompted or influenced into going to Towner to execute his will. Thomas also claims there is evidence of undue influence in the way the will was handled after it was executed. The will was not given to Dokken for safekeeping or to the Lawrence County Clerk of Courts, but to Kenneth who deposited it in his bank in Richland, Washington. Thomas claims Kenneth kept Dokken’s will even after his resignation of his guardianship in 1988.9
[¶ 30.] In determining a presumption of undue influence had not arisen, the trial court first looked to whether a confidential relationship existed between Dokken and the Crosses. “A confidential relationship exists whenever a decedent has placed trust and confidence in the integrity and fidelity of another.” Id. ¶ 16 (citing Madsen, 535 N.W.2d at 892). In determining whether a confidential relationship exists, this Court considers such factors as the “amount of time the beneficiary spent with the testator, whether the beneficiary handled many of the personal or business affairs of the testator, and whether the testator ever sought the advice of the beneficiary.” Id. (citing Till, 458 N.W.2d at 524). The court found some evidence of a confidential relationship, because Kenneth Cross was Dokken’s legal guardian and Myrtle was Kenneth’s wife. The trial court also noted the Crosses managed Dokken’s money during the time he executed his will.
[¶ 31.] However, the trial court found that other than transporting Dokken to North Dakota, there was no evidence either Mr. or Mrs. Cross participated in the preparation or execution of the will. Other than Thomas, Myrtle was Dokken’s only living relative. Furthermore, the trial court found “it is only logical he would leave his estate to her rather than those he hardly knew and never saw. Thomas could not remember if he ever met Gilbert.”
[¶ 32.] The trial court found the evidence in this case showed Dokken was not susceptible to undue influence, and we agree. Hyde testified Dokken controlled his monthly allowance given to him by the foster home and was also conservative in his spending. Hyde also testified that Dokken understood the concept of money and finances.
[¶33.] The Crosses only saw Dokken once a year and would call or write an additional two or three times a year. Kenneth’s claim to the VA for guardianship fees he had previously not sought is no more than any guardian was entitled to under South Dakota law for his services. We agree with the trial court’s findings of fact contained in its memorandum opinion:
There is scant evidence of any opportunity by Crosses to exert undue influence on Gilbert. They lived over a thousand miles away, visited him annually, and called or wrote occasionally. The trip to North Dakota was Gilbert’s idea. When Hyde passed this request along to [Ken*497neth], [Kenneth] waited until summer to make the trip. This is not the behavior of a person seeking unfair advantage or attempting to improperly influence the Testator.
[¶ 34.] We find there is a lack of evidence in the record the Crosses were predisposed to exert undue influence over Dokken.10 The Crosses never tried to influence Dokken in how he spent his money, and told the Hydes to give Dokken whatever money he wanted. The guardianship accounts were annually reviewed by the YA and approved by the circuit court. “[I]n order for undue influence to exist, the influence ‘must be such as to destroy the free agency of the testator and substitute the will of the person exercising it for that of the testator.’ ” Till, 458 N.W.2d at 528 (quoting In re Estate of Blake, 81 S.D. 391, 398, 136 N.W.2d 242, 246 (S.D.1965)). Because the trial court was not clearly erroneous in finding Thomas failed to establish a presumption of undue influence, or in finding Thomas failed in his burden of establishing two of the elements necessary for a finding of undue influence, we need not address the issue any further.
[¶ 35.] 3. Whether the trial court abused its discretion in admitting the expert testimony of Dr. Stephen Manlove.
[¶ 36.] Thomas contends Dr. Man-love’s testimony was inadmissible. At trial Thomas objected to the testimony based on, among others, the grounds of foundation and Dr. Manlove’s testimony was not scientifically proven as being an area of his expertise. Thomas obtained from the trial court a continuing objection to Dr. Man-love’s testimony and made a written motion to strike before resting his case.
[¶ 37.] Dr. Manlove testified at trial the techniques he used to reach his conclusion Dokken possessed testamentary capacity were consistent with techniques accepted by the American Association of Psychiatry and the Law. Dr. Manlove has been certified in forensic psychology by the American Association of Psychiatry and the Law and the American Psychiatric Association. He has attended classes conducted by the American Board of Psychiatry, including classes which instruct doctors on the proper and acceptable procedures to use in preparing an opinion in testamentary capacity cases. Dr. Manlove testified forensic psychiatry involves the interaction of psychology and the law. He explained it includes working with people in legal situations and testifying regarding psychological issues. Forensic psychiatry is legally defined as “that branch of medicine dealing with disorders of the mind in relation to legal principles and cases.” black’s law DICTIONARY 449 (6th ed 1990).11
[¶ 38.] Dr. Manlove’s testimony relied for its foundation upon interviews with *498Michaela Hyde and Robert Bender,12 reviewed field examiners’ reports from 1983-1990, the Contestant’s Answers to Proponents’ Interrogatory to Contestant dated July 1998 and the medical records of Dokken from 1978-1990. Thomas argues Dr. Manlove’s testimony did not establish his forensic psychiatry “rests on a reliable foundation and relevant to the task at hand” under Daubert v. Merrell Dow Pharmaceuticals, Inc., 509 U.S. 579, 589, 113 S.Ct. 2786, 2794, 125 L.Ed.2d 469, 480 (1993). Thomas also argues Dr. Manlove’s testimony goes to an ultimate fact of the case, i.e., whether Dokken possessed testamentary capacity to execute a will, and is thus an issue for the trial court to determine. However, SDCL 19-15-4- (Rule 704) allows Dr. Manlove’s testimony as to the issue of testamentary capacity. SDCL 19-15-4 provides: “[testimony in the form of an opinion or inference otherwise admissible is not objectionable because it embraces an ultimate issue to be decided by the trier of fact.”
[¶ 39.] Furthermore, “[t]he trial court’s evidentiary rulings are presumed correct and will not be reversed unless there is a clear abuse of discretion.” Stormo v. Strong, 469 N.W.2d 816, 820 (S.D.1991) (quoting Zepp v. Hofmann, 444 N.W.2d 28, 31 (S.D.1989)). Trial courts have broad discretion concerning the admission of expert testimony. State v. Moeller, 1996 SD 60, ¶87, 548 N.W.2d 465, 485 (citing State v. Hill, 463 N.W.2d 674, 676 (S.D.1990)).
[¶ 40.] In South Dakota, SDCL 19-15-2 governs the admissibility of scientific expert testimony. SDCL 19-15-2 provides:
If scientific, technical, or other specialized knowledge will assist the trier of fact to understand the evidence or to determine a fact in issue, a witness qualified as an expert by knowledge, skill, experience, training, or education, may testify thereto in the form of an opinion or otherwise.
This is the test set forth in the Daubert case which was adopted by this Court in State v. Hofer, 512 N.W.2d 482 (S.D.1994). After the adoption of the Daubert test, general acceptance in the scientific community is no longer required. Moeller, 1996 SD 60, ¶ 52, 548 N.W.2d at 479. The trial judge must simply determine “that an expert’s testimony both rests on a reliable foundation and is relevant to the task at hand.” Id. Pertinent evidence based on scientifically valid principles will satisfy those demands. Id. (citing Hofer, 512 N.W.2d at 484) (citing Daubert, 509 U.S. at 597, 113 S.Ct. at 2799, 125 L.Ed.2d at 485).
[¶ 41.] We conclude Thomas’ objections are without merit. Thomas argues Dr. Manlove’s testimony hinges on the fact that at the time Dokken executed his will, he did not suffer from psychotic episodes. Thomas claims this testimony is inconsistent with Mr. Bender’s testimony that during the time period in which Dokken executed his will, he was talking to *499trees.13 Thomas’ objections go to the weight of the evidence rather than the admissibility of Dr. Manlove’s testimony. The “extent to which the facts are inconsistent with the expert’s opinions affect only the weight to be given to the opinions, not their admissibility.” Marnette v. Morgan, 485 N.W.2d 595, 600 (S.D.1992) (Amundson, J. dissenting) (quoting Grote v. Estate of Franklin, 214 Ill.App.3d 261, 157 Ill.Dec. 942, 573 N.E.2d 360 (1991)). “The basis of an expert’s opinion is generally a matter going to the weight of the testimony rather than the admissibility.” State v. Spiry, 1996 SD 14, ¶ 16, 543 N.W.2d 260, 264 (citing Johnson v. Schmitt, 309 N.W.2d 838 (S.D.1981) (other citations omitted)); see also People v. Danielson, 3 Cal.4th 691, 13 Cal.Rptr.2d 1, 838 P.2d 729, 751 (1992) (noting criticism of opinions of forensic psychiatrist goes to the weight of those opinions rather than their admissibility).
[¶ 42.] Courts have allowed forensic psychiatrists to testify as to the mental capacity of an individual. In some will contest cases medical testimony - usually that of a psychiatrist - is used to help determine a testator’s capacity. Note, Psychiatric Assistance in the Determination of Testamentary Capacity, Harv L Rev 1116 (April 1953). In Estate of Dankbar v. Christianson, 430 N.W.2d 124 (Iowa 1988), a forensic psychiatrist testified as to whether a schizophrenic decedent had possessed testamentary capacity to create a will. The will contestant’s evidence of the decedent’s testamentary incapacity centered on the testimony of the forensic psychiatrist, Dr. Varner.14 Id. at 129. The court noted the doctor had offered a number of opinions crucial to the contestant’s proof of the decedent’s incapacity, and held the psychiatrist’s testimony alone generated a jury question as to testamentary capacity. Id. See also Succession of Hamiter, 519 So.2d 341 (La.Ct.App. 2 Cir.1988) (noting psychiatrist with training in forensic psychiatry testified as to the issue of the decedent’s testamentary capacity).
[¶ 43.] We agree with this reasoning, and believe the trial court in this case weighed the credibility of all witnesses at trial, including that of Dr. Manlove. Thomas certainly could have called his own psychiatrist to counter Dr. Manlove’s testimony. The trial court offered him that opportunity but he chose not to do so.
[¶ 44.] We find the trial court did not abuse its discretion when it admitted Dr. Manlove’s testimony as to Dokken’s testamentary capacity. The Crosses established there was an adequate evidentiary basis for Dr. Manlove’s testimony; thus, it was up to the trial court to determine the weight to be given to Dr. Manlove’s opinion.
[¶ 45.] Affirmed.
[¶ 46.] MILLER, Chief Justice and KO-NENKAMP, Justice, concur. [¶47.] AMUNDSON, Justice, concurs specially. [¶ 48.] SABERS, Justice, dissents.. Last Will and Testament of Gilbert Dokken: ARTICLE III.
RESIDUARY ESTATE:
I give, devise and bequeath my entire estate to my sister, Myrtle Cross if she survives me, otherwise to her children in equal shares. I realize I have other relatives but to them I leave nothing.
. It is undisputed all attorney-client discussions between Dokken and Mclntee, drafting and execution of the will occurred in North Dakota rather than South Dakota. Yet throughout this proceeding both proponent and contestant have relied upon South Dakota statutes and case law. The trial court decided the case pursuant to South Dakota law. As the issue of conflict of laws is not before us we do not address it. However, it appears North Dakota follows basically the same standards for determining testamentary capacity. See Matter of Estate of Stanton, 472 N.W.2d 741 (N.D.1991) and Matter of Estate of Aune, 478 N.W.2d 561 (N.D.1991). North Dakota also follows the same standards for determining undue influence. See Matter of Estate of Otto, 494 N.W.2d 169 (N.D.1992) and Perry v. Reinke, 570 N.W.2d 224 (N.D.1997).
. As Thomas does not recall ever meeting Dokken and did not produce live witnesses who did, his case is a cross-examination of the proponent’s witnesses together with documentary evidence, much of it from the Veteran’s Administration.
. Mclntee died in 1988.
. Both would recognize the significance of the matter of testamentary capacity. At the time of the will’s execution, Mclntee was a licensed attorney and Coyne was a legal secretary with sixteen years experience.
. At trial, Mr. Hyde gave the example of when the veterans would go out to eat, some would order the biggest, most expensive steak, but Dokken would usually have chicken because it was cheaper.
. Bender received a Master's Degree in social work in 1956, and he was a clinical social worker for the VA Hospital in Fort Meade. On the average he saw Dokken monthly.
. It appears the dissent has abandoned this most deferential standard of review for a selective sifting of the facts, some of which are not even supported by the record. In the dissent there is not a single sentence acknowledging this standard of review upon which *495the entire issue hinges. Rather, it devotes its entire discussion to an attempted justification to reverse the trial court.
The dissent quotes Michaela Hyde as testifying that she “agreed that Dokken had ‘no understanding of his income, estate and expenses.’ ” She never testified in that manner. What she really said was:
Q: On the economic section, it says, “Gilbert has no understanding of his income, estate and expenses.” Would that correspond with your recollection at that time?
A: That is possible. We didn’t talk to him about any income or estates or any of his expenses other than his allowance.
The dissent cites dated VA documents for the proposition that Dokken "seemed to be unsure of actually who [his] guardian [wa]s.“ The author of that statement was never called as a witness and thus was not subject to cross-examination. In contrast, Michaela Hyde who cared for Dokken for years did testify live and was thoroughly cross-examined:
Q: Did Gilbert know who his guardian was?
A: Yes he did.
Michaela’s husband Douglas Hyde testified:
Q: And did he know that Kenneth was his guardian?
A: Yes, uh-hmm. He knew.
Robert Bender, a VA social worker who saw Dokken regularly testified:
Q: Could he give you the name of his guardian?
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A: Yes.
Contrary to the VA document’s claim that Dokken could not provide his own date of birth, Michaela Hyde testified:
A: With maybe the [VA] field examiner, just because he only came once a year, so he'd be more like a stranger to [Dokken]. [Dokken] would discuss these things with the other veterans.
Although the dissent claims Dokken saw snakes coming out of the walls, Robert Bender testified:
Q: Was there any occasions where he saw snakes on the wall, or holes in the wall, or that type of thing?
A: Not while the Hydes were there, no.
It is not surprising that the trial court chose to believe the live testimony of witnesses who cared for Gilbert Dokken on a daily basis for years over that of stale government records. Further, the Hydes and Robert Bender had no financial or other interest in the outcome of the case which is not always the situation in a will contest. Michaela Hyde explained the value of the government records was minimal because the field examiner "came once a year, so he’d be more like a stranger to [Dokken].” Douglas Hyde testified "[Dokken] wouldn’t talk with [the VA field examiners] hardly at all." Robert Bender agreed, noting it would be difficult for the field examiner to "get responses and answers from [Dokken].”
The trial court recognized the minimal value of these government documents when they were used to attempt to cross-examine live witnesses. It observed, "I think we should ask the person who wrote the note.” Of course that was impossible since the authors were never produced by the contestant.
. In 1988, the VA determined Kenneth was not able to "properly fulfill his duties and responsibilities as a guardian for Dokken." The VA gave Kenneth the opportunity to resign in favoring of appointing a bank in South Dakota. Kenneth then signed a letter of resignation.
. Evidence of the lack of undue influence the Crosses had in their relationship with Dokken is clearly shown by a letter written on March 3, 1986 by Kenneth to the VA. In part it states:
With the expense of [Myrtle’s] surgery and the following treatments it has become necessary for me to recover the costs of three trips to Dakota in the past four years. Originally I hoped I could get Gilbert [Dokken] to move near the veterans hospital in Walla Walla [Washington]. Trips to Spearfish have shown me this is the only place he considers home and is where his only friends are.
This letter was written only eight months after the Crosses last visited Dokken which included the trip to Towner to execute the will. If on that trip Crosses were again- unable to influence Dokken lo relocate to Washington, it is difficult to accept the argument of Thomas that on the same trip Crosses were able to convince Dokken to leave them all his assets.
. Forensic psychiatry is a subspecialty of psychiatry, which itself is a subspecialty of medicine. Michael K. Spodak, ABA The Psychiatrist as Witness, 27-SUM Brief 64 (Summer 1998). Psychiatry is defined as the medical science that deals with the origin, diagnosis, prevention, and treatment of mental disorders. Id. A psychiatrist is a physician whose training includes a medical degree and four or more years of post-medical school training, usually including an internship and at least three years of residency training in psychiatry. Id. Following the completion of residency training in psychia*498try, the psychiatrist may receive additional certification in forensic psychiatry. Id. In recent years, the American Board of Psychiatry and Neurology has established a subspe-cialty examination in forensic psychiatry. Id. If a physician satisfactorily completes that examination, he or she is then designated with additional certification in forensic psychiatry. Id. "[I]n the mental health field, forensic psychiatry is a well-established sub-specialty with well-trained individuals experienced in the evaluation of litigants, knowledgeable about the' interface between law and mental health, and often skilled in presenting information effectively.” Id.
. Thomas also objected to Dr. Manlove’s reliance on his interviews with the Hydes and Bender as inadmissible hearsay. However, we have previously stated an expert may rely on interviews with family members, witnesses, officers and other medical professionals. State v. Gallegos, 316 N.W.2d 634, 637 (S.D.1982). Moreover, in Daubert the Supreme Court stated: "[u]nlike an ordinary witness, ... an expert is permitted wide latitude to offer opinions, including those that are not based on first-hand knowledge or observation.” Daubert, 509 U.S. at 592, 113 S.Ct. at 2796, 125 L.Ed.2d at 482.
. Robert Bender testified Dokken's psychotic episodes involved beating on and talking to apple trees and the disposal of his clothing in the garbage. However, Bender further explained the tree incidents only happened every two or three months when Dokken failed to take his regular medication. Apparently one of Dokken’s few luxuries in life was that he liked to dress well and choose his own clothes. When he tired of his clothes or wanted to go shopping for new ones, he attempted to force the issue by throwing some of his clothing in the trash.
. The proponents of the will objected to the psychiatrist’s testimony, arguing it was based in large part on the hearsay statements and opinions of others. Id. Dr. Varner reviewed extensive data concerning the decedent’s family and medical history, and his sources of information included interviews with family members, medical records and attending physicians. Id. This is similar to the objection made in the case before us.