: a formerly used legal test under which a person was not judged responsible for a criminal act that was attributed to a mental disorder
Word History
Etymology
Monte Durham, 20th century American litigant
First Known Use
1955, in the meaning defined above
Legal Definition
Durham rule
noun
Dur·ham rule
ˈdu̇r-əm-, ˈdər-
: a rule of criminal law used in some states that holds that in order to find a defendant not guilty by reason of insanity the defendant's criminal act must be the product of a mental disease or defect compare irresistible impulse test, m'naghten test, substantial capacity test
History and Etymology for Durham rule
from Durham v. United States, 214 F.2d 862 (1954), a case heard by the District of Columbia Court of Appeals that established the rule