Many social interactions between school-age children contain both competitive and cooperative elements. In order to gain a better understanding of how students at risk for emotional and behavioural difficulties (EBD) negotiate social exchanges in cooperative and competitive-related tasks in comparison with non-EBD students: (a) prosocial; (b) negative; and (c) conflict behaviours were assessed. Fifty-seven children at risk for EBD and 57 comparison children participated in three different social tasks with non-target partners. Both students and teachers completed a standardised behaviour checklist. Social ability and sex differences were considered. Results are discussed from a social-cognitive framework, and practical implications will be highlighted. (Contains 1 figure and 6 tables.)