Washington statute
RCW 9A.12.010 — Insanity
Current through 2026 Regular Session
Part of Chapter 9A.12: Insanity, Revised Code of Washington.
Full text of RCW 9A.12.010
Statutory text current through the 2026 Regular Session. This publication reproduces the official text of the Revised Code of Washington from the Code Reviser's published files; it is not the official statutes of the State of Washington.
To establish the defense of insanity, it must be shown that:
(1) At the time of the commission of the offense, as a result of mental disease or defect, the mind of the actor was affected to such an extent that:
(a) He or she was unable to perceive the nature and quality of the act with which he or she is charged; or
(b) He or she was unable to tell right from wrong with reference to the particular act charged.
(2) The defense of insanity must be established by a preponderance of the evidence.
Official sources
Legal terms used in this section
This reference is informational and is not legal advice.