--- - |2 The study examined whether peer association, a subtype of peer influence that involves the indirect modeling of behaviors, can promote positive development among Black American adolescents living in high‐risk neighborhoods. Data were collected during a three‐year longitudinal study from a sample of 316 Black American adolescents (M = 11.65 years). As positive peer association increased over time, youth experienced an increase in self‐esteem, school connectedness, paternal and maternal closeness, and a decrease in supportive beliefs about aggression. Additionally, lower ethnic identity appeared to account for why some youth experienced a sharper increase in maternal and paternal closeness as positive peer association increased. Future interventions should consider harnessing the ability of prosocial peers to foster healthy development. - Journal of Research on Adolescence, Volume 28, Issue 3, Page 711-730, September 2018.