insanity defense

insanity defense. Criminal law. An affirmative defense alleging that a mental disorder caused the accused to commit the crime. See 18 USCA § 17; Fed. R. Crim. P. 12. 2. • Unlike other defenses, a successful insanity defense may not result in in acquittal but instead in a special verdict (“not guilty by reason of […]

Criminal law. An affirmative defense alleging that a mental disorder caused the accused to commit the crime. See 18 USCA § 17; Fed. R. Crim. P. 12.2. • Unlike other defenses, a successful insanity defense may not result in in acquittal but instead in a special verdict (“not guilty by reason of insanity”) that usu.