Although a growing literature has documented the effectiveness of informal group work during class sessions, virtually no data exist on which students are collaborating. As a result, instructors rarely know whether students are self-sorting in ways that maximize learning. This article explores which undergraduate students worked together on each…

We examine the manner in which voluntary associations expose individuals to differing perspectives, or "cross-talk." Specifically we develop hypotheses based on the interactive roles of elite bias and homophily in structuring networks of democratic participation and test them on social network data of Los Angeles neighborhood councils.…

This study analyzes the impact of school structure on the friendship networks of students in desegregated schools in Israel. It highlights the importance of school features, such as the homeclass, to the formation of relationships among seventh through ninth grade students. A review of research literature on this topic is presented in the areas of…