Mental disturbed violent offenders in Sweden.

Among perpetrators of crimes of violence against persons submitted to psychiatric examination, 16 men with severe mental disorder have been examined by standardized psychologic tests and clinical interviews. Objective anamnestic data have been used to assess social background, individual development and onset of mental disorder. Psychotic as well as nonpsychotic men reacted with violence against threat to the offender's physical existence of his self image. In most instances ego weakness or depleted mental energy exaggerated the feeling of threat or stymied the ability to choose alternative solutions. Abuse of alcohol and narcotics and acute inebriation often weakened self-control and triggered of the act of violence.