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Insanity Defense Information

In criminal trials, the insanity defense is where the defendant claims that he or she was not responsible for his or her actions due to mental health problems (psychiatric illness or mental handicap). There are different definitions of legal insanity, such as the M'Naghten Rules, the Durham Rule, the Americal Legal Institute definition, and various miscellaneous provisions (e.g. relating to lack of mens rea)[1] .

In the United Kingdom, Ireland, and the United States, use of the defense is rare[2]; however, since the Criminal Procedure (Insanity and Fitness to Plead) Act of 1991 [3], insanity pleas have steadily increased in the UK[4] . Mitigating factors, including things not eligible for the insanity defense like intoxication (or, more frequently, diminished capacity), may lead to reduced charges or reduced sentences.

The insanity defense is based on evaluations by forensic mental health professionals with the appropriate test according to the jurisdiction. Their testimony guides the jury, but they are not allowed to testify to the accused's criminal responsibility, as this is a matter for the jury to decide. Similarly, mental health practitioners are restrained from making a judgment on the issue of whether the defendant is or is not insane or what is known as the "ultimate issue".[5]

Some jurisdictions require the evaluation to address the defendant's ability to control his or her behavior at the time of the offense (the volitional limb). A defendant claiming insanity is pleading "not guilty by reason of insanity" (NGRI) or "guilty but insane/mentally ill" in some jurisdictions which, if successful, may result in the defendant being committed to a psychiatric facility for an indeterminate period.

Contents

Mitigating factors and diminished capacity

The United States Supreme Court (in Penry v. Lynaugh) and the United States Court of Appeals for the Fifth Circuit (in Bigby v. Dretke) have been clear in their decisions that jury instructions in death penalty cases that do not ask about mitigating factors regarding the defendant's mental health violate the defendant's Eighth Amendment rights, saying that the jury is to be instructed to consider mitigating factors when answering unrelated questions. This ruling suggests specific explanations to the jury are necessary to weigh mitigating factors.

Diminished responsibility or diminished capacity can be employed as a mitigating factor or partial defense to crimes and, in the United States, is applicable to more circumstances than the insanity defense. Where it is a partial defense, it has the effect of reducing the charge to manslaughter. The Homicide Act 1957 is the statutory basis for the defense of diminished responsibility in England & Wales, whereas in Scotland it is a product of case law. The number of findings of diminished responsibility has been matched by a fall in unfitness to plead and insanity findings (Walker, 1968). A plea of diminished capacity is different from a plea of insanity in that "reason of insanity" is a full defense while "diminished capacity" is merely a plea to a lesser crime.[6]

Withdrawal of successful insanity defense

Several cases have ruled that persons found not guilty by reason of insanity may not withdraw the defense in a habeas petition to pursue an alternative. However, other rulings have allowed it. In State v. Connelly, 700 A.2d 694 (Conn. App. Ct. 1997), for example, the petitioner who had originally been found not guilty by reason of insanity and committed for ten years to the jurisdiction of a Psychiatric Security Review Board filed a pro se writ of habeas corpus and the court vacated his insanity acquittal. He was granted a new trial and found guilty of the original charges, receiving a prison sentence of 40 years.[7]

Refusal of insanity defense

In the landmark case of Frendak v. United States, the court ruled that the insanity defense cannot be imposed upon an unwilling defendant if an intelligent defendant voluntarily wishes to forego the defense.[8]

Psychiatric treatments

See also: Involuntary commitment

Those found to have been not guilty by reason of insanity are generally then required to undergo psychiatric treatment, except in the case of temporary insanity (see below). This is not the case in England and Wales, where under the Criminal Procedure (Insanity and Unfitness to Plead) Act of 1991 (amended by the Domestic Violence, Crime and Victims Act, 2004 to remove the option of a guardianship order), the court can mandate a hospital order, a restriction order (where release from hospital requires the permission of the Home Secretary), a "supervision and treatment" order, or an absolute discharge. [9][10] Unlike defendants who are found guilty of a crime, they are not institutionalized for a fixed period, but rather held in the institution until they are determined not to be a threat. Authorities making this decision tend to be cautious, and as a result, defendants can often be institutionalized for longer than they would have been incarcerated in prison[11]. In Foucha v. Louisiana (1992) the Supreme Court of the United States ruled that a person could not be held "indefinitely".

So far, in the United States, those acquitted of a federal offense by reason of insanity have not been able to challenge their psychiatric confinement through a writ of habeas corpus or other remedies. In Archuleta v. Hedrick, 365 F.3d 644 (8th Cir. 2004), the U.S. Court of Appeals for the Eighth Circuit the court ruled persons found not guilty by reason of insanity and later want to challenge their confinement may not attack their initial successful insanity defense:

The appellate court affirmed the lower court’s judgment: "Having thus elected to make himself a member of that ‘exceptional class’ of persons who seek verdicts of not guilty by reason of insanity...he cannot now be heard to complain of the statutory consequences of his election." The court held that no direct attack upon the final judgment of acquittal by reason of insanity was possible. It also held that the collateral attack that he was not informed that a possible alternative to his commitment was to ask for a new trial was not a meaningful alternative.[12]

Incompetency and Mental Illness

An important distinction to be made is the difference between competency and criminal responsibility.