Longitudinal data from 746 adolescents in Toronto, Canada (54% females), was gathered in eight waves over seven years (1995 through 2001), beginning when the youths were 10 to 12 years old (mean age = 11.8, SD = 1.2 years). Five trajectories of substance use were identified: chronic-high, childhood onset-rapid high, childhood onset-moderate,…

School-based bullying perpetration and victimization is common worldwide and has profound impacts on student behavior and mental health. However, few studies have examined young adult outcomes of bullying perpetration or victimization. Research on factors that protect students who have bullied or been bullied is also lacking. This study examined…

This study examined the extent to which the quality of parent and peer attachments related to early adolescents' life satisfaction (LS), whether peer attachment served as a mediator between parent attachment and LS, and potential gender differences. Total of 587 middle school students in grades 6 through 8 participated. Although both parent and…

The effects of a package of instructional methods on the academic achievement, behavior, and social bonding of 77 experimental and 83 control students in grade seven who were low achievers in math are described. The potential for preventing discipline problems through promoting sound teaching practices in mainstream classrooms is reviewed. (TJH)