Wash. Rev. Code » Washington Court Rules / Rules of Evidence (ER) / Title 7 Opinions and Expert Testimony
Revised Code of Washington

Wash. R. Evid. 702 (2026)

ER 702. Testimony by Experts

✓ current as of May 2026
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ER 702 TESTIMONY BY EXPERTS

If scientific, technical, or other specialized knowledge will assist the trier of fact to understand the evidence or to determine a fact in issue, a witness qualified as an expert by knowledge, skill, experience, training, or education, may testify thereto in the form of an opinion or otherwise.

[Adopted effective April 2, 1979.]

Comment 702

[Deleted effective September 1, 2006.]