DSM-III disorders in a large sample of adolescents.

The prevalence of DSM-III disorders was studied in 943 adolescents aged 15 years from a general population. Prevalence rates of disorder of 25.9% for girls and 18.2% for boys were found. The most prevalent disorders were overanxious disorder, nonaggressive conduct disorder, and simple phobia. Marked differences were noted among the disorders in terms of associated social competence, with multiple disorders and primarily "externalizing" disorders being related to poorer competence. A model of parental confirmation of disorder was developed suggesting that confirmation was more likely where the mother was depressed, the family low in social support, and the adolescent less socially competent.