Diploma, Free University, Berlin, 1976. Doctor of Philosophy, Technology University, Berlin, 1978.
Scientific assistant Technology University, Berlin, Federal Republic of Germany, 1976-1980. Associate professor University Pennsylvania, Philadelphia, 1981-1983. Professor University Munich, 1984-1991.
Chair, professor University Giessen, since 1991. Visiting professor University Bremen, Federal Republic of Germany, 1980, Pennsylvania State University, 1988-1989, London Business School, 1999-2000. Adjunct professor University Pennsylvania, Philadelphia, since 1984.
Member International Association Applied Psychology (president-elect 2000-2002).