This book presents an accessible and state-of-the-art survey of current research on social dilemmas. A social dilemma arises when actions that are justifiable in terms of individual rationality (e.g. over-harvesting resources, or using private instead of public transportation) threaten the common good and in the long run the individual's own self-interest as well. The study of social dilemmas has important links with many areas in psychology, as well as with cognate disciplines such as risk analysis, environmental science, political science, and economics. Accordingly, the book should appeal not only to psychologists but also to a wider audience of scholars and researchers. Contributors include both established authorities and recent innovators, and the organization and contents of the book reflect the most recent trends in this exciting area. Increased attention is given to modeling dynamics and processes in social dilemmas, and greater emphasis placed on exploring structural solutions to dilemmas. New findings and theoretical developments regarding group and inter-group processes are highlighted and a move is made away from a heavy reliance on laboratory experiments and game theory to field studies and real-world applications. A scholarly prospective chapter at the beginning and an integrative concluding chapter provide useful overviews of the area and the contributions to the book.