insanity defense

(redirected from Criminally insane)
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Related to Criminally insane: insanity plea, Not guilty by reason of insanity, GBMI


behavior directed to protection of the individual from injury.
character defense any character trait, e.g., a mannerism, attitude, or affectation, which serves as a defense mechanism.
insanity defense a legal concept that a person cannot be convicted of a crime if he lacked criminal responsibility by reason of insanity at the time of commission of the crime.
defense mechanism in psychology, an unconscious mental process or coping pattern that lessens the anxiety associated with a situation or internal conflict and protects the person from mental discomfort. In the theory of psychoanalysis, the ego, following the reality principle, conforms to the demands of the outside world, but the id (repressed unconscious), following the pleasure principle, pursues immediate gratification of desires and reduction of psychic tension. The superego (conscience or morality) may take either side. Defense mechanisms develop in order to control impulses or feelings that lead to inner conflicts, to reach compromises between conflicting impulses, and to reduce inner tensions. They help to manage or avoid anxiety, aggression, hostility, resentment, and frustration. Defense mechanisms are not pathological in themselves; they can be a means of dealing with unbearable situations. Among the most common defense mechanisms are denial, displacement, identification, projection, rationalization, reaction-formation, repression, and sublimation.
defense reaction a mental reaction that shuts out from consciousness ideas not acceptable to the ego. See also defense mechanism.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

in·san·i·ty de·fense

in forensic psychiatry, the use in the courtroom of insanity as a mitigating factor in the defense of an accused on trial for a serious criminal offense. See: criminal insanity.
Farlex Partner Medical Dictionary © Farlex 2012

insanity defense

Forensic psychiatry A legal defense that a person cannot be convicted of a crime if he lacked criminal responsibility by reason of insanity–a term defined as a matter of law; the premise is that where there is no mens rea because of insanity, there is no criminal responsibility. See American Law Institute Formulation, Durham Rule, Irresistible impulse test, Long Island Rail Road massacre, M'Naughton Rule. Cf 'Black rage' defense, Television intoxication, 'Twinkie' defense.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

insanity defense

In legal and forensic medicine, the premise that an insane person who commits a crime is not legally responsible for that act.
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
And if the interaction can't be broken off and you have the misfortune to encounter someone who's truly criminally insane, you have to be fully prepared to solve the problem immediately.
Breivik has admitted killing 77 people in shootings and a bomb attack in Norway in 2011 and the key issue of the trial is to establish whether he is criminally insane.
If the court decides he is criminally insane, he will be committed to psychiatric care; if he is judged to be mentally stable but found guilty, he will be facing a sentence of 21 years which could be extended to keep him behind bars for the rest of his life.
Grimm and the criminally insane Sweet Tooth, flaming frock and all.
If the report is officially confirmed, it will run counter to an initial evaluation late last year that found the 33-year-old right-wing extremist criminally insane and will thus relaunch the debate on whether or not he can be sentenced to prison for the twin attacks.
Breivik, who has been declared criminally insane, smirked as he was led in to Oslo district court, handcuffed and dressed in a dark suit, for his last scheduled hearing before the trial starts in April.
State broadcaster NRK reported on Wednesday that three of the review panel's members had "big objections" to the initial report declaring Breivik criminally insane, but today commission statement gave no such indication.
But at a hearing last month it was ruled he was criminally insane and unfit to plead.
"All I know is that it's a mental hospital for the criminally insane," Ruffalo says to a seasick DiCaprio en route in Martin Scorsese's impressive but slightly overblown thriller.
Two US marshals (Leonardo DiCaprio and Mark Ruffalo) travel to a hospital for the criminally insane to investigate the disappearance of an inmate, but uncover a web of deception.
Shutter Island (15) US MARSHAL Teddy Daniels (Leonardo DiCaprio) and partner Chuck Aule (Mark Ruffalo) make the stomach-churning journey by water to Ashecliffe Hospital for the Criminally Insane with a hurricane closing in on the island.
Marshalls Teddy Daniels and Chuck Aule arrive at Shutter Island's hospital for the criminally insane to find an escaped patient.