Background: It is increasingly recognized that youth who follow early onset persistent (EOP), childhood limited (CL) and adolescent onset (AO) trajectories of conduct problems show somewhat varying patterns of risk (in childhood) and adjustment problems (in adolescence and adulthood). Little, however, is known about how other adjustment problems…

Lahey and Waldman proposed a developmental propensity model in which three dimensions of children's emotional dispositions are hypothesized to transact with the environment to influence risk for conduct disorder, heterogeneity in conduct disorder, and comorbidity with other disorders. To prepare for future tests of this model, a new measure of…

This article discusses key aspects of school-based efforts to identify school context variables that can either ameliorate or exacerbate the risk for violence and aggression. A review of risk factors for aggression is followed by discussion of intervention in early childhood, intervention throughout middle childhood and adolescence, teaching…