Teaching Assistant, Columbia University, Psychology Department, Spring 1969.

Second Year Analyst (Microbiology Teaching Assistant), Heinz, Pittsburgh, PA, Summer 1969.

Graduate Student, (Research Assistant, Teaching Assistant, NSF Predoctoral Fellow), University of Wisconsin, Madison, Psychology Department, 1969-1973.

Lecturer, University of Wisconsin, Madison, Psychology Department, Summer 1973.

Assistant Professor, Department of Psychology, The Johns Hopkins University, Baltimore, MD, 1973-1979.

Senior Research Fellow, Laboratorium voor algemene natuurkunde, Biophysics, Rijksuniversiteit, Groningen, the Netherlands, September-December, 1978.

Associate Research Scientist, Department of Psychology, The Johns Hopkins University, 1979-1980.

Affiliate Scientist, Wisconsin Regional Primate Research Center, University of Wisconsin-Madison, l983-1988.

Associate Professor, Division of Biological Sciences, University of Missouri-Columbia, 1979-1986.

Professor, Division of Biological Sciences, University of Missouri-Columbia, 1986-1992.

William S. Barnickel Chair in the Natural Sciences, Department of Biology, Saint Louis University, 1992-2000.

Professor, Department of Biology, Saint Louis University, 2000-present.

This page was last updated on June 9, 2000

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