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.

新的证据表明，虽然在同龄人中占据较高的地位可以促进青少年的幸福感，但受朋友支配的感觉却会带来心理成本。然而，人们对青少年友谊的日常权力动态或其严重的情感后果知之甚少。这项为期 14 天的密集纵向研究引入了对朋友主导地位和友谊影响力的新颖每日评估，检查了它们与情绪的关联，并测试了作为调节因素的焦虑。参与者为 195 名 11^年级学生（M_年龄 = 16.48，SD_年龄 = 0.35；66% 为女性）。多层次模型显示，青少年在感觉被朋友支配的日子里心情会更差，而在感觉自己在朋友中强大和有影响力的日子里心情会更好。对于焦虑程度较高的青少年来说，与负面情绪的关联最强。研究结果强调了青少年友谊中权力的动态本质。