Diploma, Free University Berlin, 1963. Doctor in Economics, Free University Berlin, 1969. Doctor in Economics (honorary), University St. Gallen, Switzerland, 1991.
Doctor in Philosophy (honorary), University Helsinki, Finland, 2000.
Referendar Senate of Berlin, 1963-1965. Assistant professor economics Free University Berlin, 1966-1969. Associate professor University Münster, Germany, 1969-1971.
Professor economics, director University Göttingen, Germany, since 1971.
Member German Society for Education Research (treasurer l980-88), American Educational Research Association, European Association for Research on Learning and Instruction.
Married Roswitha Manski, September 30, 1965 (deceased February 1990). Children: Claudia, Leona. Married Susanne Weber, November 11, 1994.