Insanity Defense

Synonyms

Criminal Insanity

Defense, Insanity

Insanity, Criminal

M'Naghten Rule

McNaughton Rule

Rule, M'Naghten

Rule, McNaughton

A legal concept that an accused is not criminally responsible if, at the time of committing the act, the person was laboring under such a defect of reason from disease of the mind as not to know the nature and quality of the act done or if the act was known, to not have known that what was done was wrong. (From Black's Law Dictionary, 6th ed)