Monday, February 14, 2011

Why can a sociopath often pass a lie detector test despite being guilty?

Research suggests there may be a biological component to the sociopath's fearlessness. Sociopaths are remarkably tolerant of electric shock (Hare & Schalling, 1978). Under tense conditions they show heart rate acceleration but few other signs of stress—no sweaty palms, for example. They typically pass a lie detector test even if they are lying. Ability to pass a lie detector test is part of the FBI's profile for murderers who mutilate their victims, because this type of person is usually an antisocial personality.
Bamber lie detector