however, by enactment of the Criminal Law (Insanity) Act 2006, effective June 1, 2006. The act, in pertinent part, specifically adopted the partial defense for the charge of murder where a successful defense will result in a manslaughter conviction instead of murder.

The defense is to be contrasted with insanity which is a complete but affirmative defense. In most jurisdictions a defendant would be acquitted on the grounds of insanity if the defendant established to the satisfaction of the