Collected Dataset / QLSKC_Grade7

The population consisted of kindergarten boys and girls attending French-speaking public schools in the Canadian province of Quebec during the 1986-87 and 1987-88 school years. Two thousand children representative of the population and 1017 children exhibiting disruptive behaviour problems were included in the cohort.

At age 13 years (grade 7), adolescents who attended a school where there were at least six other study participants were invited to self-report their delinquent behaviours via paper and pencil questionnaires. The Self-Rating Questionnaire collected socio-demographic data as well as information on family life, relationships, activities and jobs, sexuality, and school environment and progress. Furthermore, the Social Behaviour Questionnaire, Pubertal Development Scale, Child Depression Inventory and Self-Description Questionnaire were also completed.