Existing research posits multiple dimensions of bullying and victimization but has not identified well-differentiated facets of these constructs that meet standards of good measurement: goodness of fit, measurement invariance, lack of differential item functioning, and well-differentiated factors that are not so highly correlated as to detract…

This 17-year longitudinal study tested whether low peer-perceived acceptance and association with aggressive-disruptive friends during preadolescence predicted students' failure to graduate from secondary school. Participants were 997 Caucasian, French-speaking boys from low-socioeconomic status, urban neighborhoods. The boys were recruited in…

A model of school achievement that included intellectual ability, preschool behavior, and cognitive self-control was tested through structural equation modeling with 291 kindergarten children. Children who were less aggressive or more prosocial exerted better cognitive self-control over their school tasks, and cognitive self-control was positively…