An individually administered test of self‐reported delinquency was given to 402 boys aged 14–15 years, following pilot work published earlier. The results were analysed factorially and related to a measure of social handicap on which the boys has been rated some years previously, and to the boys' records of criminal conviction. A large general factor of delinquency was found and several specific factors. The general factor was related to social handicap and criminal conviction, but the specific factors showed differences in their relations to these two social variables. Second‐order factors were also extracted and the first two generated a hypothesis concerning the interaction of handicap and conviction which was tested empirically on the data.