Research on groups has been a major focus of concern among psychologists and sociologists for many years. The study of groups certainly deserves a central role in these disciplines since much of our behavior occurs in groups and many important social phenomena involve groups. Issues such as leadership, conformity, group decision-making, group task performance, and coalition formation have had a long history of research. However, recently a number of other areas of research have blossomed that provide interesting new perspectives on group processes (e.g., social impact). In addition, topics of research have developed outside the commonly ac­ cepted domain of group dynamics (e.g., self-disclosure) which seem to be concerned with rather basic group processes. Basic Group Processes was designed to bring together in one volume a repre­ sentative sample of the broad range of work currently being done in the area of groups. Some of the chapters provide a review of the literature while others focus more specifically on current programs of research. All, however, provide new insights into basic group processes and a number provide broad integrative schemes. All of the authors were asked to emphasize theoretical issues rather than a detailed presenta­ tion of research. Basic Group Processes suggests that research on groups is a lively enterprise and forging interesting new theoretical and empirical directions.