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Direct linkPingault, Jean-Baptiste; Tremblay, Richard E.; Vitaro, Frank; Japel, Christa; Boivin, Michel; Côté, Sylvana M. – Child Development, 2015
This study examined the contribution of nonparental child-care services received during the preschool years to the development of social behavior between kindergarten and the end of elementary school with a birth cohort from Québec, Canada (N = 1,544). Mothers reported on the use of child-care services, while elementary school teachers rated…
Descriptors: Child Care, Preschool Children, Kindergarten, Elementary School Students
Brendgen, Mara; Lamarche, Veronique; Wanner, Brigitte; Vitaro, Frank – Developmental Psychology, 2010
The present study examined to what extent different types of friendship experiences (i.e., friendlessness, having depressed friends, and having nondepressed friends) are associated with early adolescents' longitudinal trajectories of depressed mood. On the basis of a sample of 201 youths (108 girls, 93 boys), we identified 3 distinct longitudinal…
Descriptors: Early Adolescents, Friendship, Adolescents, Depression (Psychology)
Otten, Roy; Wanner, Brigitte; Vitaro, Frank; Engels, Rutger C. M. E. – Journal of Clinical Child and Adolescent Psychology, 2008
This study examined the role of friends' attitudes in adolescent smoking (N = 203). Growth mixture modeling was used to identify three trajectories of smoking behavior from ages 12 to 14 years: a "low-rate" group, an "increasing-rate" group, and a "high-rate" group. Adolescents' own and their friends' attitudes at age…
Descriptors: Smoking, Preadolescents, Early Adolescents, Student Attitudes
