Whether the trial court properly excluded expert testimony that Bottrell’s PTSD-related flashbacks impaired her ability to form the intent required for premeditated or second degree murder.
Holding
No. The trial court abused its discretion by excluding the PTSD testimony; it was admissible diminished-capacity evidence relevant to intent. The court reversed the second degree murder conviction and remanded for a new trial on that charge.
Reasoning
Diminished capacity is a mental condition, short of insanity, that prevents a defendant from forming the mental state an offense requires. First degree premeditated murder requires premeditated intent, and second degree murder requires intent to cause another’s death. Because the State had to prove the required intent beyond a reasonable doubt, Bottrell was entitled to offer relevant evidence that she could not form it at the time of the killing.
The trial court relied on the multi-part foundational test from State v. Edmon. But the Washington Supreme Court subsequently made clear in State v. Ellis that the Edmon requirements are not absolute. The admissibility of diminished-capacity expert testimony is governed by ER 702, together with the ordinary relevance rules in ER 401 and ER 402. That rule applies in noncapital cases as well as capital cases.
PTSD is generally recognized in the psychiatric and scientific communities, and the court concluded that it may produce diminished capacity. A PTSD flashback may cause a person to relive trauma, lose or alter the usual sense of reality, and experience a reduced sense of control over actions. Thus, PTSD evidence can assist a jury in deciding whether a defendant formed a required intent during a violent encounter.
Dr. Stanulis was qualified as an expert and offered a sufficiently specific medical basis for his opinion. He reviewed years of records, interviewed Bottrell, administered psychological testing, and testified to a medical certainty that she had PTSD. He further testified that, during the struggle, she was experiencing flashbacks of earlier abuse and that those flashbacks impaired her ability to perceive events accurately and to form specific intent.
The proposed testimony was relevant because mental disorders and their effects are beyond ordinary lay understanding. It could have helped the jury decide whether PTSD flashbacks prevented Bottrell from forming an intent to kill Hall. Because the evidence satisfied ER 702 and was relevant to the mental-state elements of premeditated and second degree murder, its exclusion was error. The remand was limited to second degree murder because the jury had already rejected first degree premeditated murder by convicting on the lesser offense.