Degree: University of Cologne, Dr. rer.pol. (1966); University of Mannheim, habilitation sociology (1978);
Director of the research unit "Institutions and Social Change", Social Science Research Center Berlin; professor, Free University, Berlin;
Vice-president of the Council of the Institute for Strengthening Democracy in Bosnia, Sarajevo (1998-); foreign member of the Finnish Academy of Science and Letters (1999-); member of the Board of the Jacob International Society for Collaborative Studies, Warsaw, Poland (1996-).
