It applies only after this defense is successfully used to convince a jury that it was the main reason that the defendant committed the crime. It would be in the sentencing aspect of the trial that the judge must apply the apporpriate law(s).
In an insanity defense, the defense must prove that the defendant is insane.
Jnuary 1, 1996. Source: 8 Kan. J.L. & Pub. Pol'y 253 (1998-1999) Insanity Denied: Abolition of the Insanity Defense in Kansas; Rosen, Marc
Insanity defense and self defense
the Federal Insanity Defense Reform Act
0.25% of all cases.
Ingo Keilitz has written: 'The insanity defense and its alternatives' -- subject(s): Insanity, Jurisprudence
The insanity defense is alright as long as it is not used in just any case situation involving a murder. An insanity defense may allow a defendant who is mentally competent and has no history of mental illness to fake a specific mental disorder like Dissociative Identity Disorder (like in a Law & Order SVU episode titled "Alternate") and use it as a way to plead "not guilty by reason of insanity."
People can no longer plea insanity due to the Affordable health care act.
Insanity
As far as I know, none.
The insanity defense is used by criminal defendants. The most common variation is cognitive insanity. Under the test for cognitive insanity, a defendant must have been so impaired by a mental disease or defect at the time of the act that he or she did not know the nature or quality of the act, or, if the defendant did know the nature or quality of the act, he or she did not know that the act was wrong. The vast majority of states allow criminal defendants to invoke the cognitive insanity defense. In Bundy's case, the defense didn't do much. He took the death penalty.
Alibi, insanity, duress, self-defense and entrapment.