The relationships between childhood exposure to violence and adolescent conduct problems were investigated in a sample of 88 primiparous adolescent mothers and their children. Regression analyses revealed that witnessing violence and victimization prior to age 10 predicted delinquency and violent behaviors, even after controlling for prenatal maternal and early childhood externalizing problems. Social competency and depression during middle childhood moderated the relationship between victimization and violent behaviors for girls, but not boys: Lower levels of social competency and depression served as risk factors for delinquency among teenage girls who experienced victimization during childhood. These findings have important implications for youth violence prevention programs.Exposure to violence has been consistently linked to antisocial behavior among youth. For example, violence victimization was found to be the single best predictor of juvenile violent behaviors for both boys and girls in a nationally representative sample of adolescents (Blum, Ireland, & Blum, 2003). Among urban Black adolescents, retrospective reports of witnessing violence and victimization were the strongest predictors of current use of violence, such as involvement in fights and the carrying of weapons (Durant, Cadenhead, Pendergrast, Slavens, & Linder, 1994). Relatedly, Jenkins and Bell (1994) indicated that weapon carrying is often done out of a fear of victimization rather than a violent or malicious intent. Research is needed to identify the factors that precipitate, protect against, and exacerbate adolescent conduct problems so that successful preventive efforts may be developed and implemented. The current study investigated the effects of childhood exposure to violence on adolescent conduct problems among children of adolescent mothers.Violence exposure occurring specifically in the home, school, or community has been associated with the development of conduct problems in children. For example, Flannery, Singer, Williams, and Castro (1998) found that violent behavior among adolescents who were exposed to high levels of home violence was three times higher for girls and two times higher for boys when compared with adolescents from low-violence homes. In a longitudinal study of inner city males, histories of maltreatment predicted higher levels of persistent serious delinquency over 6 years (between the ages of 8 and 12), even after controlling for family and demographic factors (Stouthamer-Loeber, Wei, Homish, & Loeber, 2002). Likewise, exposure to violence at school has been associated with concurrent violent behaviors as well as psychological trauma (Flannery, Wester, & Singer, 2004). Furthermore, witnessing of, and victimization from, community-based violence were found to contribute to the development of conduct problems over one year in a high-risk sample of urban adolescents, even after controlling for baseline levels of antisocial behavior (Pearce, Jones, Schwab-Stone, & Ruchkin, 2003). In addition to the local...