OPINION
T1 Defendant Norman Prows appeals his conviction for aggravated sexual abuse of a child. He first argues that the trial court erred by refusing to suppress evidence of the confession he made to the police. He then argues, alternatively, that he should have been allowed to present expert witness testimony regarding how his mental state may have affected his confession. We affirm.
BACKGROUND
2 After some concern and questioning by her mother, the victim, Prows's eleven-year-old stepdaughter, acknowledged that Prows had touched her inappropriately on several occasions. Prows was subsequently interviewed by two police officers. During the interview, Prows was accompanied by an attorney that he had recently retained. The interview lasted less than an hour, including thirteen minutes midway through the interview where Prows and his attorney conferred in private. According to Prows, he was sleep-deprived during the interview and had not taken the medication that he had been prescribed to treat his depression and adult attention deficit disorder (ADD). However, Prows had filled out a personal information form at the police station that indicated that he was feeling "good" and had slept the prior *1202 night. He also indicated that he was on medications for his depression and ADD, having taken those medications that morning.
T3 In their questioning, the police officers used the false-friend technique. 1 And as the interview progressed, Prows became increasingly upset and emotional. Eventually, Prows admitted to inappropriately touching the victim on three occasions. However, Prows denied the police officers' accusations that inappropriate conduct had happened on more than these three occasions and that he had molested other children.
4 Prows later attempted to have his confession suppressed. The trial court denied Prows's motion, determining that Prows "did not suffer from a mental illness sufficient to render him incapable of asserting his rights or resisting questioning." The trial court also determined that Prows's confession was "not a result of police misconduct." In concluding that the interrogation was not unconstitutionally coercive, the trial court considered important the following facts: the police officers did not make threats or promises to Prows, the police officers did not misrepresent the evidence against Prows, Prows did not "parrot" back details presented by the police officers, and Prows remained in disagreement with the police officers regarding some of their accusations.
15 At trial, the victim testified as to the sexual abuse she had endured at the hands of Prows. This testimony was supported by both the testimony of the victim's mother that she had once witnessed Prows asleep with the vietim on the couch with his hand on her crotch and the testimony of the victim's sister that she had onee been present during some inappropriate touching. The State also presented evidence of Prows's confession to the police officers and the victim's mother's testimony that the night prior to the police interview, Prows had called her and tearfully apologized. Prows testified in his defense, explaining his emotional and fearful state at the time of the police interview. Prows also sought to introduce testimony of a psychiatrist to the effect that Prows suffered from personality disorders that would make him more susceptible to the false-friend technique and more likely to confess to something he did not do. This latter testimony was excluded by the trial court under rule 608 of the Utah Rules of Evidence as giving impermissible character evidence.
16 The jury ultimately returned a guilty verdict on one count of aggravated sexual abuse of a child, and Prows was thereafter sentenced to five years to life in prison. Prows now appeals the denial of his motion to suppress and, in the alternative, the exclusion of the psychiatrist's testimony under rule 608.
ISSUES AND STANDARDS OF REVIEW
T7 Prows first claims that his confession was coerced and that the trial court therefore should have suppressed it.
In reviewing a trial court's determination on the voluntariness of a confession, we apply a bifurcated standard of review. The ultimate determination of voluntariness is a legal question; accordingly, we review the district court's ruling for correctness. We set aside a district court's factual findings only if they are clearly erroneous.
State v. Rettenberger,
18 Prows alternatively argues that he should have been allowed to present expert testimony regarding his mental state and how it may have impacted his confession. Cases involving the admissibility of expert
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testimony are reviewed under an abuse of discretion standard. See State v. Adams,
ANALYSIS
I. The Admissibility of Prows's Confession
19 Prows argues that the trial court's refusal to suppress his confession violated his constitutional right against compulsory self-inerimination, see U.S. Const. amends. V, XIV. "'In the face of a challenge to the voluntariness of a statement or confession, it is incumbent upon the prosecution to demonstrate by a preponderance of the evidence that the statement was made voluntarily based upon the totality of the cireum-stances.'" Rettenberger,
A. The Details of the Interrogation
110 Each of the external factors indicate a lack of coercion in this case. First, the interrogation was quite short in duration, lasting a total of fifty-one minutes, which included a thirteen-minute break in which Prows and his attorney conferred privately. See State v. Montero,
B. The Characteristics of the Accused
111 While "a determination of involuntariness cannot be predicated solely upon a defendant's mental state, his mental state is relevant to the extent it made him more susceptible to mentally coercive police tactics." Id. 117. The only subjective factors that Prows raises as supporting his argument of an involuntary confession are his mental health and emotional instabilities. He specifically argues that he was suffering from depression, anxiety, Dependent Personality Disorder (DPD), and ADD 5 He also argues that he was emotional due to existing family problems and due to the police officers' reference to the fact that he had been the victim of abuse when he was a child.
{12 "We now consider [these] subjective characteristics, especially as known to the interrogating officers, to determine the extent to which those characteristics made [Prows] more susceptible to manipulation." State v. Rettenberger,
II. The Presentation of Expert Testimony
A. Rule 608
1183 Prows alternatively argues that the trial court should have allowed his expert witness to testify regarding Prows's mental state at the time of the confession and how that mental state may have factored into the confession. 6 The trial court exeluded this *1205 testimony under rule 608 of the Utah Rules of Evidence. "This rule permits testimony concerning a witness's general character or reputation for truthfulness or untruthfulness but prohibits any testimony as to a witness's truthfulness on a particular occasion." State v. Rimmasch, TiS P.2d 888, 391 (Utah 1989); see also Utah R. Evid. 608(a) (providing that evidence attacking the credibility of a witness "may refer only to character for truthfulness or untruthfulness"). However, we do not agree that the prohibitions in rule 608 are to be read as broadly as the trial court's decision suggests.
1] 14 In State v. Adams,
1 15 Applying this concept to the instant case, the testimony that Prows sought to present was not a direct opinion as to whether he had been truthful when making his confession but simply addressed his mental state and how such may have affected him at the time he gave his confession. In the Notice of Defendant's Intent to Call Expert Witness, Prows specified that he intended to call the psychiatrist "in order to present evidence regarding his mental state and how such a mental state could have impacted [his] statements made to [the police officers]. Prows also stated that he wanted the psychiatrist to testify "as to his opinion that [Prows]'s mental state could have impacted the content of those statements." And even though one might infer from such expert testimony that the expert thought Prows was probably not telling the truth when he confessed, this possibility is not sufficient to require exclusion of the proposed testimony under rule 608. See id. Thus, the trial court erred in excluding the testimony under rule 608.
B. Rule 403
116 In its brief, the State argues that even if the expert testimony was admissible under rule 608, it was inadmissible under rule 403. Rule 403 provides that "evidence may be excluded if its probative value is substantially outweighed by the danger of unfair prejudice, confusion of the issues, or misleading the jury." Utah R. Evid. 408. This argument is not well taken. Although the State is correct that the testimony at issue here did not concern " physical symptoms'" or "an objectively diagnosable disease or condition," we do not agree that this makes the expert testimony "highly speculative" and therefore of low probative value. Nor do we agree that providing the jury with information regarding the types of behaviors caused by certain mental conditions would "'usurp the fact-finding function'" of the jury. We therefore do not agree that the risks associated with admitting the expert testimony outweighed the testimony's probative value.
C. Harmless Exror
{17 "[We find errors by the trial court harmful only if there is a 'reasonable likelihood' that the verdict would have been
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different had the expert testimony been included." State v. Clopten,
CONCLUSION
118 The trial court did not err in its refusal to suppress evidence of Prows's confession. But Prows should have been permitted to introduce the psychologist as an expert witness to testify as to matters that would not have amounted to a direct opinion as to Prows's truthfulness. Nonetheless, we affirm because we are convinced that the error here was harmless. Affirmed.
T 19 WE CONCUR: CAROLYN B. McHUGH, Associate Presiding Judge and GREGORY K. ORME, Judge.
Notes
. The false-friend technique is where police officers represent to a suspect that they are his friends and are acting in his best interest. See State v. Rettenberger,
This technique is commonly used in police interrogations because resistance to the disclosure of information is considerably increased . if something is not done to establish a friendly and trusting attitude on the part of the subject. In this atmosphere ... the suspect is fooled into trusting that the interrogator's behavior will conform to the norms of friendship: the interrogator will loyally help the suspect out of the jam, advise the suspect to confess only if confession will be beneficial [to the suspect], and so on.
Id. (omissions and alteration in original) (citation and internal quotation marks omitted).
. We also recognize that the police officers allowed Prows to consult with his attorney in private upon request. And although Prows argues that the police officers essentially ignored a request by his attorney to stop the interrogation, the trial court found-and Prows does not directly challenge the finding-that the statement by the attorney was ambiguous.
. Prows also makes an ineffective assistance of counsel argument. "[In reviewing counsel's performance, we give trial counsel wide latitude in making tactical decisions and [do] not question those tactical decisions unless there is no reasonable basis supporting them." State v. Maestas,
. Prows acknowledges that the police officers did not make any threats relating to his eventual punishment, yet he argues that they made other equally persuasive threats. Specifically, he points to the police officers' painting a picture of the victim herself becoming an abuser in the future if the cycle of abuse did not end with Prows. But we do not agree that pointing out such considerations-possibilities over which the police clearly exercise no control-amounts to a threat or promise of the kind pertinent to our inquiry here. See Colorado v. Connelly,
. Prows also argues that he was suffering from a lack of sleep. But the trial court found that Prows had slept the night before the interview, and Prows does not adequately challenge that finding on appeal, see generally Chen v. Stewart,
. [Elvidence surrounding the making of a confession bears on its credibility as well as its volun-tariness. ... [Blecause questions of credibility,
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whether of a witness or of a confession, are for the jury, the requirement that the court make a pretrial voluntariness determination does not undercut the defendant's traditional prerogative to challenge the confession's reliability during the course of the trial. Crane v. Kentucky,
. Prows argues that because the error "implicates" his constitutional right to " 'a meaningful opportunity to present a complete defense,'" (quoting Crane v. Kentucky,
. The victim's younger sister also testified that on one occasion she "heard some giggling and [the victim] was jiggling while-while she was in the bed with [Prows]."
