This investigation examines the spread of problem behaviors (substance use and delinquency) between twin siblings. A sample of 628 twins (151 male twin pairs and 163 female twin pairs) drawn from the Quebec Newborn Twin Study completed inventories describing delinquency and substance use at ages 13, 14, and 15. A 3-wave longitudinal actor-partner…

Research on fraternity men focuses almost exclusively on problematic behaviors such as homophobia and sexism, alcohol abuse, violence against women, sexual promiscuity, and the overrepresentation of members among campus judicial offenders. Consequently, little is known about those who perform masculinities in healthy and productive ways. Presented…

Experiencing a traumatic event can impact students' well-being and jeopardize their academic achievement and social-emotional health. A quarter of all students will experience a traumatic life event before they graduate from high school (Costello, Erkanli, Fairbank, & Angold, 2002), necessitating an understanding of how trauma affects students…

In this study, two longitudinal models of early adolescent risky sexual behaviors (RSB) were compared using a pooled sample of 267 Canadian and Italian adolescents (55% females; 53% Canadians) assessed yearly from grade 8 to 10. We focused on parenting practices (monitoring, control, limit setting), adolescent problem behaviors (antisocial…

Examined drug use, involvement in problem behavior, and family and peer predictors of these behaviors among Indian and white adolescents in a Canadian urban community. Found the groups had a similar rate for alcohol use; however, Indian adolescents showed higher rates and more frequent use of cigarettes, marijuana, solvents, and greater…