Prof. Dr. Siegwart M. Lindenberg Fellow of the European Academy of Sociology Siegwart Lindenberg, Ph.D. (Harvard), is Professor of Cognitive Sociology in the Department of Sociology and the Interuniversity Center for Social Science Theory and Methodology (ICS), University of Groningen, the Netherlands; and Tilburg Institute for Behavioral Economics Research (TIBER), Tilburg University. He is a member of the Royal Netherlands Academy of Arts and Sciences. His interests lie in explanations of pro- and antisocial behavior, environmental behavior, and the governance of sustainable joint production in organizations, especially via the development, test and application of theories of “social rationality” that deal with the influence of the social environment on social behavior via its influence on cognitive and motivational processes (goal-framing), on the satisfaction of need-related goals, and on processes of self-regulation.