Monthly Instability in Early Adolescent Friendship Networks and Depressive Symptoms

This study examined (1) the relation between perceived friendship instability and depressive symptoms, (2) the directionality of this link, and (3) whether the relation between friendship instability and depressive symptoms would differ according to specific friendship status (best and secondary friendships) and contexts (school, non-school, and multiple). Participants were 102 young adolescents (51 girls; M age  =  12 years) who completed a series of five monthly telephone interviews and in-class questionnaires. Results suggested that friendship instability over a five-month period was significantly associated with an increase in depressed mood. Regarding the directionality of the influence, cross-lag analyses revealed that elevated depressive symptoms at one time point significantly predicted an increase in friendship instability by the following month, whereas friendship instability at one time point did not predict an increase in depressive symptoms the next month. Finally, participants' depressed mood appeared to be associated with instability in their best friendships (but not secondary friendships) and in their school friendships (but not non-school and multi-context friendships). The theoretical and practical implications of the results are discussed.