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Links between Friends' Physical Aggression and Adolescents' Physical Aggression: What Happens If Gene-Environment Correlations are Controlled?
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Vitaro, Frank; Brendgen, Mara; Girard, Alain; Dionne, Ginette; Tremblay, Richard E.; Boivin, Michel – International Journal of Behavioral Development, 2016
Exposure to deviant friends has been found to be a powerful source of influence on children's and adolescents' aggressive behavior. However, the contribution of deviant friends may have been overestimated because of a possible non-accounted gene-environment correlation (rGE). In this study, we used a cross-lagged design to test whether friends'…
Descriptors: Adolescents, Friendship, Aggression, Genetics
Developmental Links between Trajectories of Physical Violence, Vandalism, Theft, and Alcohol-Drug Use from Childhood to Adolescence
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van Lier, Pol A. C.; Vitaro, Frank; Barker, Edward D.; Koot, Hans M.; Tremblay, Richard E. – Journal of Abnormal Child Psychology, 2009
Differences in developmental trajectories of physical violence, vandalism, theft, and alcohol-drug use from ages 10 to 15 were studied. For females and for males, three trajectories of theft and of alcohol-drug use increased from 10 years to 15 years, while only the high trajectory of vandalism increased from ten to 14. All trajectories of…
Descriptors: Violence, Vandalism, Females, Drug Abuse
Prosocial Development from Childhood to Adolescence: A Multi-Informant Perspective with Canadian and Italian Longitudinal Studies
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Nantel-Vivier, Amelie; Kokko, Katja; Caprara, Gian Vittorio; Pastorelli, Concetta; Gerbino, Maria Grazia; Paciello, Marinella; Cote, Sylvana; Pihl, Robert O.; Vitaro, Frank; Tremblay, Richard E. – Journal of Child Psychology and Psychiatry, 2009
Objectives: To longitudinally describe prosocial behaviour development from childhood to adolescence, using multiple informants within Canadian and Italian samples. Method: Participants in Study 1 were 1037 boys from low socioeconomic status (SES) areas in Montreal, Canada, for whom yearly teacher and mother reports were obtained between the ages…
Descriptors: Cross Cultural Studies, Mothers, Children, Foreign Countries
Do Peers Contribute to the Likelihood of Secondary School Graduation among Disadvantaged Boys?
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Veronneau, Marie-Helene; Vitaro, Frank; Pedersen, Sara; Tremblay, Richard E. – Journal of Educational Psychology, 2008
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…
Descriptors: Graduation Rate, High School Graduates, Longitudinal Studies, Peer Influence
Physically Aggressive Boys from Ages 6 to 12: Family Background, Parenting Behavior, and Prediction of Delinquency.
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Haapasalo, Jaana; Tremblay, Richard E. – Journal of Consulting and Clinical Psychology, 1994
Teachers rated 948 boys from low socioeconomic environments on physical aggression at ages 6, 10, 11, and 12. Classified boys according to stability of fighting over time. Findings showed that developmental pathways of physically aggressive behavior for boys in low socioeconomic environments were related to familial adversity and poor parenting…
Descriptors: Aggression, Children, Delinquency, Elementary Education
Prevalence of Hyperactivity-Impulsivity and Inattention Among Canadian Children: Findings from the First Data Collection Cycle (1994-1995) of the National Longitudinal Survey of Children and Youth. Final Report
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Romano, Elisa; Baillargeon, Raymond H.; Tremblay, Richard E. – Human Resources Development Canada, 2002
Hyperactivity, impulsivity, and inattention are among the most common behaviour problems in children. The aim of this study was to estimate the prevalence of hyperactivity-impulsivity and inattention in the Canadian population of 2-11-year-old girls and boys, using data from the first National Longitudinal Survey of Children and Youth (NLSCY)…
Descriptors: Incidence, Probability, Public Policy, Health Services