Craig D. Parks is associate professor of psychology at Washington State University and the coauthor of Social Dilemmas (Westview Press, 1996). Lawrence J. Sanna is associate professor of psychology at Washington State University. Craig D. Parks is associate professor of psychology at Washington State University and the coauthor of Social Dilemmas (Westview Press, 1996). Lawrence J. Sanna is associate professor of psychology at Washington State University.

• Preface -- Introduction and Overview -- Basic Group Processes -- The Experience of Group Membership -- Group Influence -- Group Performance and Interaction -- Group Decisionmaking -- Social Facilitation -- Social Motivation Losses -- Social Dilemmas -- Specific Types of Groups -- Groups in the Workplace -- Juries -- Computer-Based Groups -- Unique Groups -- Future Directions in Group Research -- Appendix: Methodological Issues in Groups Research