State v. Lopez-Cruz, 299 P.3d 569

Defendant was convicted after a bench trial of one count of first-degree sexual abuse.
The 10-year-old complainant stayed at a friend's house; defendant—boyfriend of the friend's mother—entered the room and touched her over clothing, progressing to the pubic area and simulating intercourse.
Complainant testified she felt defendant's penis against her; defendant attempted to remove her shorts and left when she rolled over.
Emergency room diagnosis, based on the complainant's report, was ‘abusive contact of an adult with a patient, no penetration or genital contact,’ with no physical signs found.
Defense suggested the allegations were fabricated; trial included Van Eaton's testimony describing the examination as brief with no trauma evidence.
The trial court admitted Van Eaton’s diagnosis; defendant challenged this as plain error under Southard and Lupoli; conviction reversed and remanded.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Whether the diagnosis of sexual abuse/adult abusive contact was admissible without physical evidence	State contends diagnosis admissible under Southard as medical evidence; argues it aided the fact finder.	Defendant argues admission was plain error under Southard and Lupoli because it implicit credibility assessment.	Admission was plain error and reversible.
Whether the error qualifies as plain error and warrants correction despite unpreserved error	State argues no obvious error and possible strategic trial choice not to object.	Defendant asserts error was obvious and not harmless, affecting credibility determinations.	Court exercises discretion to correct the error.
Whether the error was harmless or prejudicial in a trial to the court	State claims limited impact in a bench trial where evidence might be disregarded.	Error could have influenced the court’s credibility assessment of witnesses.	Error not harmless; reversal warranted.

State v. Southard, 347 Or 127 (2009) (admissibility of medical diagnosis of sexual abuse; implicit credibility assessment invalid under 403)
State v. Lupoli, 348 Or 346 (2010) (expert testimony explaining diagnosis of sexual abuse improper when tied to credibility; vouching concerns)
Ailes v. Portland Meadows, Inc., 312 Or 376 (1991) (plain-error standard and discretionary correction of unpreserved errors)
State v. Bahmatov, 244 Or App 50 (2011) (context for correcting error in credibility-based testimony)
State v. Gonzales, 241 Or App 353 (2011) (procedural correction of error in credibility-based evidence)
State v. Marrington, 335 Or 555 (2003) (harmless-error analysis in bench trials)
State v. Cafarelli, 254 Or 73 (1969) (harmless error in non-jury trials; evidentiary assessment)
State v. Davilia, 239 Or App 468 (2010) (limits on presumed trial impact in credibility-dependent evidence)