Medical Subject Headings

Last uploaded: March 22, 2026
Id http://purl.bioontology.org/ontology/MESH/D007298
http://purl.bioontology.org/ontology/MESH/D007298
Preferred Name

Insanity Defense

Definitions
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)
Synonyms
McNaughton Rule
Rule, M'Naghten
Defense, Insanity
M'Naghten Rule
Insanity, Criminal
Rule, McNaughton
Criminal Insanity
Type http://www.w3.org/2002/07/owl#Class
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