Brenner v. Nooth, 391 P.3d 947

Background

Petitioner was convicted of two counts of first-degree sexual abuse after guests found him naked and touching the sleeping victim; petitioner claimed no memory and had visible intoxication.
At trial defense counsel conceded the contact but argued extreme intoxication and PTSD-related flashbacks (from Vietnam service) negated the required mental state; counsel did not present expert mental-health or pharmacology testimony and petitioner did not testify.
On post-conviction review petitioner asserted ineffective assistance for failing to develop an alcohol/PTSD-based defense and presented two experts: Dr. Robert Julien (pharmacologist) and Dr. Bridget Cantrell (trauma clinician).
The post-conviction court found counsel deficient, admitted both experts, concluded their testimony would have been admissible and prejudicial, vacated the conviction, and ordered a new trial.
The state appealed, arguing key portions of the experts’ testimony were "scientific" and, under Brown/O’Key, petitioner failed to prove the scientific foundation required for admissibility; therefore petitioner could not show prejudice.
The appellate court held that the challenged parts of the experts’ testimony were scientific evidence, petitioner failed to satisfy Brown/O’Key admissibility requirements at the post-conviction hearing, and thus failed to prove prejudice; the grant of relief as to the PTSD/alcohol claim was reversed and the matter remanded for entry of a corrected judgment.

Issues

Issue	Petitioner’s Argument	State’s Argument	Held
Whether experts’ testimony constituted "scientific" evidence subject to Brown/O’Key	Testimony was admissible under general expert-rule OEC 702 or as relevant intoxication evidence under ORS 161.125; not subject to Brown/O’Key	Expert assertions about brain chemistry, memory, adrenaline, and diminished capacity are scientific and trigger Brown/O’Key scrutiny	Court: Key parts of Julien’s and Cantrell’s testimony are scientific and thus subject to Brown/O’Key
Whether petitioner met burden at post-conviction to show the scientific evidence would have been admissible at trial	Petitioner offered experts and some literature (not admitted) and argued relevance/credibility would go to the jury	Petitioner bore burden to establish scientific validity under Brown/O’Key and failed to do so	Court: Petitioner failed to establish the scientific foundation required; admissibility not shown
Whether counsel’s failure to obtain the experts prejudiced petitioner (i.e., would admissible evidence likely affect outcome)	With expert linking testimony, PTSD and intoxication would have negated mens rea or volitional act, creating reasonable likelihood of different result	Without admissible scientific linking testimony, remaining lay evidence and diagnosis would not have shown tendency to affect the outcome	Court: Because petitioner failed to prove admissibility of the critical scientific linking testimony, he failed to show prejudice; grant of relief reversed
Scope of appellate relief given mixed findings (other expert opinions and claims)	Post-conviction court’s remedy (new trial) should stand in full	State seeks reversal as to the expert-based ineffective-assistance claim; other claims not materially affected	Court: Reverse grant of relief as to the PTSD/alcohol ineffective-assistance claim; remand for entry of judgment consistent with opinion (other findings left to post-conviction court)

Key Cases Cited

State v. Brown, 297 Or. 404, 687 P.2d 751 (establishes scientific-evidence admissibility framework)
State v. O’Key, 321 Or. 285, 899 P.2d 663 (incorporates Daubert-style factors for scientific validity)
State v. Perry, 347 Or. 110, 218 P.3d 95 (explains Brown factors and burden on proponent)
State v. Marrington, 335 Or. 555, 73 P.3d 911 (behavioral-science expert testimony treated as scientific when grounded in research/literature)
State v. Cuevas, 263 Or. App. 94, 326 P.3d 1242 (distinguishes experience-based expert opinion from scientific testimony)
State v. Dulfu, 282 Or. App. 209, 386 P.3d 85 (scientific character analyzed by its persuasive power)
Trujillo v. Maass, 312 Or. 431, 822 P.2d 703 (standards for post-conviction ineffective-assistance claims)
Strickland v. Washington, 466 U.S. 668 (federal ineffective-assistance prejudice standard)
Daubert v. Merrell Dow Pharm., 509 U.S. 579 (factors used to assess scientific validity)