insanity defense

(redirected from Criminally insane)
Also found in: Dictionary, Legal.
Related to Criminally insane: insanity plea, Not guilty by reason of insanity, GBMI

defense

 [de-fens´]
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.

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.

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.

insanity defense

In legal and forensic medicine, the premise that an insane person who commits a crime is not legally responsible for that act.
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, 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.
A US marshal searching for an escaped patient at a hospital for the criminally insane begins to think all is not as it seems.
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.
Leonardo DiCaprio is on top form in this exciting and full throttle drama about a US marshal assigned to investigate the disappearance of an inmate at a hospital for the criminally insane, a hospital conveniently located on a mysterious island cut off from the mainland .
The movie begins in 1954, when two US marshals, Teddy Daniels (DiCaprio) and Chuck Aule (Mark Ruffalo), arrive at the eponymousAaislandAajust off Massachusetts, where looms the impenetrable Ashecliffe Hospital for the criminally insane.
When a hurricane hits the area, the marshals are stranded on the island, home to a hospital for the criminally insane.