Book excerpt: Interaction in Cooperative Groups brings together related research from education, developmental psychology, and social psychology in an approach that is both integrative and analytical. Its intent is to provide an understanding of the dynamics of underlying processes that are fundamental to group interaction and its outcomes. The editors have pulled together an impressive array of researchers from diverse areas within psychology and education. Many of the most exciting and currently visible research programmes are represented. This volume is a valuable resource for the professional community and will serve to initiate a long overdue unification of distinct, yet conceptually similar, areas of research.