WA · rules
Wash. R. Evid. 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.
History
[Amended effective September 1, 1992; September 1, 2004.] Comment 701 [Deleted effective September 1, 2006.]
Provenance
- Source
- www.courts.wa.gov
- Retrieved
- 2026-09-16
- Edition
- 2026-09-16
- Content hash
ed802bfa13bd992a8d606bc63ea33c79b285576177fddf64d496a9e59c3df3d0
The link goes to the issuing authority’s own document — the one we read to produce this record. Where a source publishes whole titles rather than sections, your browser may need a moment to jump to the provision.
Unofficial copy of government-published law, reproduced from official sources with full provenance. Not an official publication; verify against official sources before relying on it in a filing. Records in the 'guidance' corpus, and only that corpus, are sub-regulatory (interpretive guidelines, survey procedures) and are not binding law. Validity bounds follow each jurisdiction's declared temporalBasis.