Analyses of youths' reports yielded three family types: (1) interactionist families, exhibiting a high degree of internal interaction and bonding; (2) hierarchical families, characterized by parental dominance and the presence of family bond and interaction patterns; and (3) antisocial families, marked by criminality and family violence. Family variables had weaker explanatory power than did other social influences on violent delinquency. The relative contributions of family supervision practices and school environments varied by crime type. Social influences outside the family appeared to contribute as strongly to delinquency and violence during adolescence, regardless of early childhood experiences. Results are discussed with reference to social learning, control, and integrated theories of juvenile delinquency. 9 notes, 6 tables, and 59 references. (Author abstract modified)