Do Childhood Conduct Problems Predict Negative Outcomes in Adolescence? A Longitudinal Analysis

The primary purpose of this study was to conduct a prospective ­­­examination of the relationship between childhood conduct problems and five outcomes in adolescence– namely, Physically violent offenses; Non-violent offenses; Deviant lifestyle; Consumption of tobacco, cannabis, or alcohol; and Meeting the symptom count diagnostic criteria for Conduct Disorder (CD) – while controlling for a series of sociodemographic factors, family characteristics and adolescent experiences. Logistic regression analyses were used to determine if childhood conduct problems in the Canadian National Longitudinal Survey of Children and Youth (NLSCY) Cycle 1 contributed to negative outcomes in adolescence in NLSCY Cycle 4. This was a prospective, population-based study of 3,725 adolescents (12-15 years old) in the NLSCY Cycle 4 (2000-2001) who were 6-9 years old in NLSCY Cycle 1 (1994-95). Childhood conduct problems were found to be associated with Non-violent offenses and Consumption of tobacco, cannabis, or alcohol in adolescence, but they were not found to be associated with Physically violent offenses or Deviant lifestyle in adolescence. Furthermore, children with conduct problems before the age of 10 were more likely to meet the symptom count diagnostic criteria for CD in adolescence.

Protecting Against Delinquency in Early Adolescence With Nonverbal Intelligence and Neighborhood Social Capital

The goal of this study was to test nonverbal intelligence and neighborhood social capital as protective factors against future delinquency in early adolescent youth placed at risk by virtue of their involvement in childhood conduct problems. Analyzing longitudinal data from 3,028 youth (1,565 boys, 1,463 girls) in one cohort of the Longitudinal Study of Australian Children (LSAC) and 3,682 youth (1,896 boys, 1,786 girls) in a second cohort of the LSAC, nonverbal intelligence, as measured by the Matrix Reasoning subscale of the WISC-IV, displayed a consistent moderating effect on the conduct problems–future delinquency relationship. According to these results, conduct problems were slightly but significantly less likely to lead to delinquency when nonverbal intelligence was high than when it was low or moderate. By shielding at-risk children from future delinquency, protective factors like high nonverbal intelligence may provide a means by which delinquency can be prevented or reduced.