State v. Bahmatov, 260 P.3d 592

Defendant, a 15-year-old immigrant, was questioned without Miranda warnings about alleged sexual offenses with a 5-year-old.
Officer pressured defendant with a threat to jail unless he told the truth; inculpatory statements followed.
Trial court partially granted suppression, excluding statements made after the threat, but allowing earlier statements.
The State presented no eyewitness or forensic abuse evidence; physician Dr. Lorenz diagnosed sexual abuse without physical findings.
Lorenz’s diagnosis relied on age-appropriate language, interview details, disclosure consistency, disclosures about others, lack of motive to lie, and police confession information.
Appeal challenges suppression ruling and the admissibility of the physician’s diagnosis and explanation.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Miranda warnings and compelled questioning	Bahmatov violated rights by questioning in compelling circumstances.	Miranda warnings were required for statements elicited under pressure.	Miranda warnings required for post-threat statements; suppression proper.
Admission of medical diagnosis without physical findings	Diagnosis admissible as expert testimony under standard rules.	Diagnosis based on believability without physical evidence should be excluded.	Plain error under Southard and Lupoli; admission reversed.
Explanation for diagnosis as comment on credibility	Physician’s explanation supported the diagnosis and credibility of complainant.	Explanation impermissibly commented on credibility of the child.	Plain error; remarks deemed impermissible commentary on credibility.
Remedy under discretion to correct error	Errors were harmless given overwhelming evidence or court trial.	Ailes discretion should not be exercised to correct errors.	Court exercises Ailes discretion to remedy errors; reversal and remand warranted.
Impact of lack of corroboration in a swearing contest	Trial court credibility findings would not be affected by expert testimony.	Expert diagnosis could alter credibility assessment.	Expert testimony could be material to credibility; reversal affirmed.

State v. Southard, 347 Or. 127 (2009) (diagnosis of sexual abuse without physical evidence generally not admissible)
State v. Lupoli, 348 Or. 346 (2010) (expert diagnosis of abuse based on credibility; absence of physical findings)
Ailes v. Portland Meadows, Inc., 312 Or. 376 (1991) (discretionary correction of evidentiary errors)
State v. Childs, 243 Or.App. 129 (2011) (Ailes discretion and impact of expert testimony on verdicts)
State v. Potts, 242 Or.App. 352 (2011) (credibility and expert testimony in swearing contest context)
State v. Merrimon, 234 Or.App. 515 (2010) (reversal for erroneous admitted expert testimony)
State v. Lovern, 234 Or.App. 502 (2010) (credibility and impact of expert testimony on verdicts)
State v. Davilia, 239 Or.App. 468 (2010) (evidentiary error in expert testimony context)
State v. Almanza-Garcia, 242 Or.App. 350 (2011) (Ailes discretion; credibility and error correction in trials)