Prior research has documented associations between hours in child care and children's externalizing behavior. A series of longitudinal analyses were conducted to address 5 propositions, each testing the hypothesis that child care hours causes externalizing behavior. Data from the National Institute of Child Health and Human Development Early Child…

This study examined how the manifestation of overt aggression changes during early adolescence using Hierarchical Linear Modeling. The distinct courses of physical and verbal aggression identified in this study provide support for developmental transformations in overt aggression, which would have been obscured unless aggression had been defined…

Problem behaviors during adolescence can include substance use, low educational achievement, delinquent or conduct-disordered behavior, and indiscriminant, precocious, or risky sexual behavior. Despite the dissimilarities of these behaviors, some researchers believe that such actions share common underlying causes, which can be explained by the…