When1: 1843
When2: 1957
Who: McNaughton Rules or M'Naghten Rules
What: law
Where: England/USA
Detail: Judges of House of Lords allowed defense of insanity against responsibility for crime [1843]. Insanity is mental disease that causes defect of reason, which causes defendant either not to know act's nature and quality or to know what he was doing but not that it was wrong.
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Date Modified: 2022.0224