This paper summarizes and integrates the findings from three separate studies, all of which had as their major objective the investigation of differences in small group behavior between children who have relatively high others-concepts and children who have relatively low others-concepts, as measured by the Paired Hands Test. Group sessions of four children each were taped while the children worked on tasks such as assembling a jigsaw puzzle or building something with Tinkertoys. The recordings were then coded blindly and analyzed statistically. All three studies showed a tendency for children who have high others-concepts to be more cooperative and friendly in small groups than children with low others-concepts. Some of the factors which were explored in these studies were sex of children, teachers' judgements of their socioeconomic status and intelligence, and variations in the group task. The data from all three studies demonstrate that the others-concept is predictive of group trends and therefore a significant theoretical construct for helping school psychologists to understand children's behavior. (Author/CJ)