Friendships in flux: A daily examination of friend continuity and associations with adolescent mood.

= 0.53; 66% female). Variability statistics (intraclass correlations, root mean square of successive differences) indicated considerable fluctuations in the consistency of friendship closeness as perceived by adolescents across 2 weeks. Results from multilevel models demonstrated that greater friend continuity was associated with greater positive mood, but not negative mood, at both the within- and between-person level. The findings reveal inconsistency in whom adolescents feel closest over 2 weeks and suggest that maintaining closeness with the same friends from 1 day to the next bolsters adolescents' short-term emotional well-being. (PsycInfo Database Record (c) 2025 APA, all rights reserved).