Assistant Research Scientist, Department of Neurology, University of Iowa Hospitals, Iowa City, Iowa, 1977-79.

Assistant Professor of Neurology, University of Wisconsin Medical School, Milwaukee Clinical Campus, 1979-1984.

Associate Professor of Neurology, University of Wisconsin Medical School, Milwaukee Clinical Campus, 1984-1991.

Director, Neurobehavioral Postdoctoral Fellowship Program, Sinai Samaritan Medical Center, Milwaukee Clinical Campus of the University of Wisconsin Medical School, 1981-1991.

Clinical Associate Professor of Psychology, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin, 1984-present.

Adjunct Associate Professor of Psychology, Northern Illinois University, DeKalb, Illinois, 1987-present.

Professore a Contratto [Visiting Professor], Facolatè di Medicina e Chirurgia, Dell'UniversitB Di Genova, (Instituto Di Clinica Neurologica), Genova, Italy, November, 1989.

Clinical Associate Professor of Neurology, University of Wisconsin Medical School, University of Wisconsin - Madison, 1991-present.