Statistical Assistant, Department of Psychology, Cornell University, 1966
Research Assistant, Department of Psychology, Cornell University, 1967
Teaching Assistant, Department of Psychology, University of Texas, 1968-1971
Instructor, Division of Extension, University of Texas, 1970-1971
Research Associate and Lecturer, Department of Psychology, University of Wisconsin, Madison, 1971-1972
Assistant Professor, Department of Psychology, Florida State University, 1972-1975
Visiting Assistant Professor, Department of Psychology, University of Texas, 1975-1976
Visiting Assistant Professor, Department of Psychology, Duke University, 1976-1977
Associate Professor, Department of Psychology, Florida State University, 1977-1981
Associate Professor, Department of Psychology, Arizona State University, 1981-1985
Visiting Research Professor, Psychologisches Institut, Universität Kiel, Federal Republic of Germany, 1983
Visiting Professor, Psychologisches Institut, Universität Heidelberg, Federal Republic of Germany, 1984
Head, Graduate Training Program in Social Psychology, Arizona State University, 1986-1987
Visiting Scholar, Department of Psychology, UCLA, 1987-1988
Visiting Scholar, Department of Psychology, UCLA, 1994-1995
Visiting Professor, Psychologisches Institute, Universität Heidelberg, Federal Republic of Germany, Summer 1997
Visiting Scholar, Department of Psychology, UCLA, Spring 2000
Visiting Professor, Department of Psychology, UCLA, 2002-2003.
Visiting Professor, Arbeitsbereich Methoden und Evaluation, Freie Universität Berlin, Federal Republic of Germany, Spring-Summer, 2007, Summer, 2008, 2009, 2010, Spring-Summer 2011, Summer, 2012, 2013, 2014, Spring-Summer, 2015, Summer 2018
Professor, Department of Psychology, Arizona State University, 1985-present.