Psychiatric aspects of homicide

Abstract
Homicide is frequently associated with mental illness and suicide. The presence study is an investigation of all known homicide incidents in Iceland during the past 80 yr (1900-1979). There were 45 homicide incidents, involing 52 victims and 47 offenders. One-third of the perpetrators were either psychotic, mentally subnormal or committed suicide. A further one-third were diagnosed as personality disordered, alcoholic, drug dependent or neurotic. A substantial proportion of the offenders suffered from fairly marked physical disabilities, and the mentally ill were significantly more frequently afflicted by such defects. Over 60% of the offenders and 50% of the victims were under the influence of alcohol at the material time. The findings are generally consistent with those of previous psychiatric studies of homicide.

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