The Limits of Expert Witness Testimony

In State v. Caril, the WA Court of Appeals held that a lower trial court did not violate the defendant’s Sixth Amendment right to present a defense by prohibiting the defendant’s expert witness from testifying to hearsay statements from another psychologist’s report.

BACKGROUND FACTS

Mr. Caril was convicted of second degree murder. He asserts he was in a state of compromised mental health when he stabbed and killed a person.

During the night of June 22-23, 2017, Mr. Ross, Ms. Nguyen, and Mr. Pimenthal enjoyed a night out with a group of friends. In the early morning hours, they obtained take-out meals and sat on the curb outside the restaurant to eat. From across the street, an individual shouted, “Shut the fuck up,” and threw a two-liter soda bottle in their direction. It landed by their feet. Ross shouted back that throwing the bottle was a “good way to get your ass kicked.”

Ross observed the individual – later identified as the defendant Mr. Caril – walk across the street. He walked towards the group brandishing a knife. Ross told everyone to “run” and that the approaching individual had a knife. Nguyen and Ross withdrew. Unfortunately, Pimenthal was not able to do so in time. While running away, Ross saw Caril stab Pimenthal. Nguyen saw Caril “punch” Pimenthal three times in the chest. Mr. Hussen, who observed these events from his car nearby, exited his vehicle and shouted at Caril. Hussen asked if Carilwas “crazy” and “why” he stabbed Pimenthal. Caril asked Hussen if he “wanted some too.” Pimenthal died from his injuries.

Caril was charged with first degree murder. He was later charged with an additional count of second degree murder.

At trial, Caril, who suffers from paranoid schizophrenia, called an expert psychologist. The expert testified that Caril lacked the capacity to form criminal intent at the time of the incident. The trial court allowed this testimony. However, the trial judge prohibited Caril’s expert witness from testifying to hearsay statements from another psychologist’s report that the expert relied on. The court reasoned that the excluded statements concerned the collateral issues of Caril’s competency to stand trial and potential future need for civil commitment.

Caril was acquitted of first degree murder, but the jury found him guilty of the lesser included crime of second degree murder (intentional murder) with a deadly weapon. Caril was found guilty of second degree murder (felony murder) with a deadly weapon on count II.

On appeal, Caril argued the trial judge abused his discretion and violated his Sixth Amendment right to present a defense by prohibiting the defendant’s expert witness from testifying to hearsay statements from another psychologist’s report.

COURT’S ANALYSIS & CONCLUSIONS

The Court Appeals said that under the Sixth Amendment, a defendant has a constitutional right to present a defense. This right is not, however, absolute. It may bow to accommodate other legitimate interests in the criminal trial process, including the exclusion of evidence considered irrelevant or otherwise inadmissible.

Furthermore, an expert witness is permitted to base an opinion on facts or data that are not admissible in evidence. Ths can happen under ER 703 if the facts or data are “of a type reasonably relied upon by experts in the particular field in forming opinions or inferences upon the subject.” Consequently, the trial court has discretion to determine the extent to which the expert may convey this information.

Here, the Court of Appeals reasoned that the hearsay statements were relevant to explain the basis for the expert’s opinion. However, it further reasoned that admitting them could confuse or mislead the jury. This was because the hearsay statements concerned collateral issues related to the defendant’s competency to stand trial and potential future need for civil commitment.  Moreover, the probative value of the statements was low. They were inadmissible as substantive evidence and relevant only for the purpose of providing additional context for the expert’s opinion.

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