Daily Fluctuations in Adolescents' Perceived Friend Dominance and Friendship Clout: Associations with Mood and the Moderating Role of Anxiety.

Emerging evidence suggests that whereas occupying high peer status promotes adolescents' well-being, feeling dominated by friends confers psychological costs. However, little is known about day-to-day power dynamics of adolescents' friendships or their acute affective consequences. This 14-day intensive longitudinal study introduced novel daily assessments of friend dominance and friendship clout, examined their associations with mood, and tested anxiety as a moderator. Participants were 195 11 th -graders (M age  = 16.48, SD age  = 0.35; 66% female). Multilevel models revealed that adolescents experienced worse mood on days they felt dominated by friends and better mood on days they felt powerful and influential among friends. Associations with negative mood were strongest for adolescents higher in anxiety. The findings underscore the dynamic nature of power in adolescents' friendships.