State v. Payne, 447 P.3d 71

Defendant was convicted of third-degree sexual abuse (ORS 163.415) after the victim testified that he exposed himself, grabbed her hand, and caused her to masturbate him in his car; she said she stayed because she feared he carried a firearm.
The police report attributed to the victim a statement that she did not flee because “a strong muscular black man could catch me.” At trial the victim denied saying the word “black,” describing the comment instead in neutral terms about the man’s size and speed.
Defendant requested the uniform witness-false-in-part instruction based on that inconsistency; the trial court denied the request as insufficient to trigger the instruction.
In closing, defendant aggressively attacked the victim’s credibility and pointed to the alleged inconsistency between the police report and her trial testimony.
The jury found defendant guilty; on appeal he argued the court erred by refusing the false-in-part instruction and that the error was not harmless because it deprived him of an argument that the victim’s entire testimony was unreliable.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Whether the trial court erred by refusing to give the uniform witness‑false‑in‑part instruction	State: court acted within discretion or any error harmless	Defendant: inconsistency about "black" statement warranted the instruction and without it jury could not be told to distrust other testimony	Even assuming error, it was harmless; affirm conviction
Whether failure to give instruction deprived defendant of his ability to argue witness impeachment	State: defendant made the impeachment argument at trial despite no instruction	Defendant: he was deprived of a formal jury instruction to support rejecting witness testimony wholesale	Court: defendant nonetheless argued credibility repeatedly; instruction would only describe what jury already could do; harmless
Proper effect and use of the witness‑false‑in‑part instruction	State: instruction is discretionary and may not be necessary	Defendant: instruction is required when witness lies in part	Court: instruction is permissive, merely states jury power; approach with caution
Whether the inconsistency likely affected the verdict	State: little likelihood given record and arguments made	Defendant: inconsistency could have led jury to distrust all testimony	Court: little likelihood of effect; error harmless

State v. Davis, 336 Or. 19 (court may affirm despite error when there is little likelihood the error affected the verdict)
State v. Long, 106 Or. App. 389 (describing witness‑false‑in‑part instruction as permissive and nonobligatory)
State v. Walker, 291 Or. App. 188 (cautionary approach to witness‑false‑in‑part instruction)
Ireland v. Mitchell, 226 Or. 286 (Supreme Court warning that the instruction can lead to mischief in the jury room)