Dataset belonging to The functions of aggression in gaining, maintaining, and losing popularity during adolescence: A multiple-cohort design

The sample included 1374 adolescents from five cohorts who were followed from grade 7 to grade 9 (49% males, Mage= 12.67 years, SD = .67). Popularity trajectories were identified based on initial status and changes in status over time, and linear mixed effects models tested group differences on changes in aggression.

The results partially confirmed our expectation that changes in popularity were associated with specific developmental patterns of proactive and reactive aggression and also varied as a function of status already achieved. Specifically, adolescents in groups characterized by gains in status increased in proactive aggression, and those in groups characterized by loses in status decreased in proactive aggression. A more nuanced pattern of group differences emerged for reactive aggression.