Karl-Dieter Opp is Professor at the University of Leipzig (Germany) and Affiliate Professor at the University of Washington (Seattle). His areas of interest include collective action and political protest, rational choice theory, philosophy of the social sciences and the emergence and effects of norms and institutions.

Karl-Dieter Opp is the author of The Rationality of Political Protest (1989), coauthor of The Origins of a Spontaneous Revolution. East Germany 1989 (1995) and editor (with M. Hechter) of Social Norms (2001).

Karl-Dieter Opp has widely published in the field of social movements and protest. Articles were published in the journals mentioned before, and I have written two books about the theme.

Part 1: What Kind of Theory Do We Need and What Is a Good Theory? Part 2: Protest, Social Movements and Collective Action: Conceptual Clarifications and the Subject of the Book Part 3: Group Size, Selective Incentives, and Collective Action Part 4: Protest and Social Movements as Collective Action Part 5: The Resource Mobilization Perspective Part 6: Political Opportunity Structures, Protest and Social Movements Part 7: Collective Identity and Social Movement Activity Part 8: How Framing Influences Mobilization and Protest Part 9: Identity, Framing and Cognitive Balance: Toward a New Theory of Identity and Framing Part 10: The Dynamics of Contention Approach - Retreat to History? Part 11: The Structural-Cognitive Model: A Synthesis of Collective Action, Resource Mobilization, Political Opportunity, Identity, and Framing Perspectives Part 12: General Discussion, Conclusion, and an Agenda for Future Research