[Circadian correlations of criminal behavior with reference to simultaneous alcoholic intoxication]

In order to study the correlation between criminal acts and time of day we analyzed reports of the Federal Police Department in Salzburg covering 2 months as well as our own psychiatric expert-opinions in case of robbery and homicide. Offences against property have the same day-time rhythm as does regular labour. Alcoholic intoxication hardly occurs with offences against property, although the activity of burglars goes over into the early hours of night. Aggressive offences are commonly accompanied by alcoholic intoxication, they are mainly observed at night. Lesser aggressive offences such as maltreatment or fighting generally occur during the late afternoon until midnight. Whereas aggressive offences of alcoholized persist throughout later hours of the night. The delinquency of robbery and homicide continues into the early hours of the morning. In cases of homicide there are differences concerning the individual conflict-situation. Homicides in connection with family tragedies or partnership conflicts usually occur during the afternoon or the early evening and show just a minor connection with alcoholization. Homicides in the course of primitive conflicts appear highly correlated to alcoholization and to the night hours. In cases of homicide of mental-patients there is no general connection with alcoholization or can there be seen a day-time correlation.