Examine the meditating and moderating effects of socioemotive traits and coping styles on aggression and prosocial behaviors. A sample of 1,557 students from Spain (53% male, M age = 13.12) completed self-report instruments of coping, empathy, emotional instability, physical aggression, and prosocial behaviors. Structural equation analysis showed support for two mediation models but little support for moderation. Emotional instability positively predicted emotion-focused coping, which in turn, positively predicted aggression. In contrast, empathy positively predicted problem-focused coping, which in turn, positively predicted prosocial behaviors. Moreover, problem-focused coping positively predicted trait empathy, which in turn positively predicted prosocial behaviors, and negatively predicted aggression. Emotion-focused coping was positively related to emotional instability, which in turn, was positively related to aggression. Discussion focuses on the interplay of self regulation and socioemotive traits in predicting aggressive and prosocial behaviors.