Statutes, codes, and regulations
Washington Court Rules
Washington Rules of Evidence
Title 7 - Opinions and Expert Testimony
Rule ER 701 - Opinion Testimony By Lay Witnesses

Wash. R. Evid. 701

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As amended through November 7, 2024
Rule ER 701 - Opinion Testimony By Lay Witnesses

If the witness is not testifying as an expert, the witness' testimony in the form of opinions or inferences is limited to those opinions or inferences which are (a) rationally based on the perception of the witness, (b) helpful to a clear understanding of the witness' testimony or the determination of a fact in issue, and (c) not based on scientific, technical, or other specialized knowledge within the scope of rule 702.

Wash. R. Evid. ER 701

Amended effective 9/1/1992; 9/1/2004.

Comment 701

[Deleted effective September 1, 2006.]