Master of Arts in Urban and Regional Planning, University Amsterdam, 1987. Master of Arts in Political Science, University Amsterdam, 1988. Doctor of Philisophy in Politics, University Oxford, 1990.
Researcher Leyden Center for Law and Public Policy, University Leyden, Netherlands, 1990—1993. Affiliated fellow Amsterdam School Social Science Research, University Amsterdam, 1994—1996. Assistant Institute Sociology, Ludwig-Maximilian University, Munich, 1993, associate professor, 1993—1996.
Senior researcher WRR Science Advisory Board for Governmental Policy, The Hague, 1996—1998. Professor political science public policy University Amsterdam, since 1998, head department political science, since 2003. Chairman jury International Spinoza Prize for Philosophy and Society, 2002.
Member steering committee XPin, Interdeptl. Initiative for Innovative Policy Making, The Hague, since 2001.