Doctor of Philosophy, Innsbruck University, Austria, 1969.
Lecturer Innsbruck University, 1969—1971. Research assistant German Institute International Education Research (DIPF), Frankfurt, Germany, 1971—1975. Assistant professor University Trier, Germany, 1973—1974.
Head Department Applied Statistics (DIPF), Frankfurt, 1975—1977. Associate professor University Mainz, Germany, 1975. Professor Psychological Methodology, Psychological Research Methods and Evaluation, Goethe University, Frankfurt, since 1977.
Director Institute Psychology, Goethe University, Frankfurt, 1978, 88, 91, Examination board diploma Psychology, Goethe University, Frankfurt, 1994—2004. Dean and senator Faculty Psychology, Goethe University, Frankfurt, 1980—1983, 1993—1996. Member German Psychological Society (DGPs), Münster, Germany, since 1996.
Head Division Methodology and Evaluation, Münster, Germany, 1998—2003, Testing Curatorship Federation German Psychological Associations (DGPs and BDP), Berlin, since 2003. Charter member and treasurer European Association Methodology, Jena, Germany, since 2004. Dean Faculty Psychology and Sports Science, Frankfurt, 2004—2009.
Counselor Conference German University Presidents, Bonn, since 2008.
Married Gislinde Knizek, August 3, 1967. Children: Brigitte Jeckel, Barbara Brischnik, Robert.