Stability and changes in problem behavior during adolescence: Latent growth analysis

The aim of this study was to examine growth trajectories of externalizing and internalizing problems during adolescence. In addition, we also examined factors that might account for individual differences in the level of problem behavior and in the rate of change: Adolescent gender and the quality of the relationships with parents and peers. The sample consisted of 212 adolescents (mean age 13.4 years at the initial assessment) who were assessed at 3 measurement waves with approximately 1-year intervals. The results showed substantial absolute and relative stability in both types of problem behavior, but also significant individual differences in both initial levels of problem behavior and in the rate of change across the 3 measurement occasions. Adolescent gender and the quality of the parent-adolescent relationship predicted the initial level of both externalizing and internalizing problems. The protective effect of the positive quality of the relationship with peers was found for internalizing but not for externalizing problems. No differences appeared between boys and girls in the effect of the quality of interpersonal relations on the level and on the rate of change in problem behavior, suggesting that the etiology of problem behavior might be similar for boys and girls in spite of gender differences in the prevalence of problem behaviors.