This study investigates friendship selection and influence processes in relation to popularity, aggression, and prosociality among 613 fifth graders in 26 classrooms within one academic year. Results showed that youth tended to select their friends based on similarity in popularity more than similarity in aggression or prosociality. Aggressive youths tended to select prosocial peers as friends given similarity in popularity, but prosocial youths did not disproportionately nominate aggressive peers. Socialization within friendships was evident for aggressive and prosocial behavior and popularity. Discussion considers the importance of social status as a grouping mechanism in peer social ecologies, and as a malleable factor that can impact student adjustment.

This study investigated moderating effects of classroom friendship network structures (centralization and density), teacher-student attunement on aggression and popularity, and gender on changes in the social status of aggression over 1 school year. Longitudinal multilevel analyses with 2 time points (fall and spring) were conducted on a sample of 856 fourth and fifth graders from 45 classrooms. Aggressive boys lost social status over time in classrooms where friendship networks were egalitarian (not centralized) and dense (with many friendship ties) and where the teacher and students were attuned to (shared perceptions about) who in their classroom was aggressive and popular. There were no effects for girls. Educational implications and prospects for setting-level theory, measurement, and intervention are discussed.

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