Gender and Disorder Specific Criminal Career Profiles in Former Adolescent Psychiatric In-Patients

A Norwegian nation-wide sample of 1087 former adolescent psychiatric in-patients, 584 males and 503 females, were followed up 15–33 years after first hospitalization. On the basis of detailed hospital records from index hospitalization all were rediagnosed according to DSM-IV. The patient list was linked to the national criminal register and the diagnostic groups were compared as to gender-specific frequency of registered criminality. Next, the criminal career characteristics were compared in those with criminal records at follow-up, relative to mental disorder at index hospitalization. The prevalence of registered criminality, both overall and for specific types of crimes, differed significantly between diagnostic groups and between genders. In both genders criminal convictions were most frequent in disruptive behavior disorders and personality disorders. Among males, the lowest violent crime rate was observed in those with psychotic disorders. Males had more severe criminal careers than females, both quantitatively and qualitatively. The diagnoses and criminal profiles of the 10 most active criminals in the study sample were described closer, as were the 11 individuals found guilty of homicide.     

Exploring gender issues in the development from conduct disorder in adolescence to criminal behaviour in adulthood

Using results from a large Norwegian follow-up study of former adolescent psychiatric in-patients we have traced the progression from mental disorders requiring hospitalisation in adolescence to registered criminal behaviour in adulthood, particularly highlighting gender differences. A nationwide representative sample of 1095 adolescent psychiatric inpatients (46% females) was followed up 15–33 years after admission to the National Centre for Child and Adolescent Psychiatry in Oslo, Norway. In adolescence 45% fulfilled the DSM-IV criteria for a disruptive behaviour disorder. At follow-up, 63% of the males and 39% of the females had a criminal record. Among females, psychoactive substance use disorder in adolescence seemed to be a sine qua non for later registered criminality, with intravenous drug use a potent risk factor for life-course-persistent criminality. The same strong association between drug use and criminality was not found in males. Factor analysis demonstrated that while the DSM-IV Conduct Disorder criteria structure was similar across genders, the prevalence of the various forms of expression was different in males and females. The differences between individuals with violent and non-violent crimes were more substantial in males than in females. There were marked gender differences in the criminal profiles observed, with the females' criminal career developing in a less serious manner than in males: females had later criminal debut, a lower number of acts on record, less diverse criminal behaviour, and an escalation in the severity of offences over time was less frequently encountered. However, secular trend analyses indicated that gender differences had diminished over the last several decades, with females “catching up” with their male counterparts. Overall, the results demonstrated important qualitative and quantitative gender differences in the criminal behaviour of former adolescent psychiatric in-patients. The results may be of use in prevention.