The study examined the links among maternal warmth and adolescents' empathic concern, moral conviction and prosocial behaviors. Participants were 311 adolescents from a low-income community (M age = 16.10 years; range = 14-19 years; 58.7% girls; 82.7% white; 13.6% Latinx). The results demonstrated that maternal warmth was positively associated with adolescents' empathic concern and moral conviction. Empathic concern was positively associated with three common forms of prosocial behaviors, and moral conviction was positively associated with four types of prosocial behaviors. Empathic concern and moral conviction also interacted to predict selfishly and selflessly motivated prosocial behaviors. Discussion will focus on the role of maternal warmth in fostering sociomoral tendencies.