Insanity Defense

AAPL Practice Guideline for Forensic Psychiatric Evaluation of ...

Feb 1, 1996 · Insanity defense: a special defense in the criminal law excusing a defendant from criminal responsibil-ity. A defendant whose insanity defense is successful is adjudicated either not guilty by reason of insanity (NGRIorNGI)orguiltybutnotcriminallyrespon-sible (NCR), depending on the jurisdiction. I. Introduction and History of the Insanity Defense