Given the importance of self-esteem for promoting adolescents' social, psychological, and academic adjustment and the growing importance of social identities during adolescence, this five-wave study examined whether an identity-based self-affirmation intervention attenuated declines in adolescent self-esteem following the high school transition. A sample of ninth graders in the United States (N = 388; M age = 14.05; 60.6% female; 35.8% male; 3.6% nonbinary, trans, or identifying with another gender; 46% White, 19% Black, 17% Asian, 6% Arab, Middle Eastern, North African, 6% Biracial/Multiethnic, 3% Latinx/Hispanic, and 3% another race/ethnicity) was recruited for the study. Following completion of a baseline online survey assessing self-esteem, participants were assigned to one of three conditions and corresponding writing exercises: identity-based self-affirmation, values-based self-affirmation, or control. Participants completed the same writing exercise during the first three waves of the study, and they completed measures of self-esteem at all five waves. Results indicated that participants in the self-affirmation conditions, but not the control condition, were protected from declining self-esteem across 1 year.
Public Significance StatementSelf-esteem is a psychological phenomenon that predicts a host of important outcomes for youth but typically stagnates or even declines during adolescence. The present study developed an identity-based and values-based self-affirmation intervention to mitigate declines in ninth graders' self-esteem across 1 year. Results revealed that adolescents in the control condition exhibited declines in self-esteem, whereas those in the identity-based or values-based self-affirmation conditions were buffered from deteriorating self-esteem. The findings suggest that providing adolescents with opportunities to reflect on values and social identities of personal importance could have cascading effects on psychological adjustment following the high school transition.