Predicting intraindividual self-concept trajectories during adolescence.

The level and stability of both global and domain-specific self-concepts was examined in a study of 253 adolescents, aged 11-20. Intraindividual self-concept trajectories were calculated through growth curve modeling. Six of the self-concept domains were stable over time. In the remaining three domains, there was a significant increase in perceived competency. Growth curve modeling highlighted individual differences in both level and change in self-concept for each of the domains. These differences were partially accounted for by the adolescents' age and gender, suggesting that these variables are important determinants of adolescent self-concept.