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Yamada, Samantha; Pepler, Debra; Jiang, Depeng; Cappadocia, M. Catherine; Craig, Wendy; Connolly, Jennifer – Journal of Child & Adolescent Substance Abuse, 2016
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,…
Descriptors: Longitudinal Studies, Substance Abuse, Adolescents, Behavior Problems