American Board of Clinical Neuropsychology, Board of Directors, Member (1990-1995); Secretary (1993-1997)

American Board of Clinical Neuropsychology, Chairman, Examination Committee (1990-present).

American Board of Clinical Neuropsychology, Representative to the Clinical Neuropsychology Synarchy (1997-present).

American Board of Professional Psychology, Examiner, Midwest and Eastern Time Zones (1985-1990).

Association of Postdoctoral Programs in Clinical Neuropsychology, Member (1992-present); Representative to the IOC (1992-present)

American Psychological Association (in association with the United States Library of Congress), Oral History Project: Arthur L. Benton (1987-1989).

American Psychological Association, Chairman, HJcaen Award Committee (1993-1996).

American Psychological Association, Division of Clinical Neuropsychology (#40), Member-at-Large, Executive Board (1995-1998)

American Psychological Association, Division of Clinical Neuropsychology (#40), Chair, Education Advisory Committee (1997- present)

Clinical Neuropsychology Synarchy, Master of Ceremonies, (1995-1997).

CNR (National Council of Research [of Italy]) and Instituto di Clinica Dell'Universita di Genova. Proposita Progetto Bilaterale (Italia - USA) (1987-1991).

Clinical Neuropsychology Synarchy, Member, Planning Committee, "Houston Conference on Specialty Education and Training in Clinical Neuropsychology" (1996-1997).

Council of Specialties, Interim Chair (1996-present)

Inter-Organizational Council for the Accreditation of Postdoctoral Programs in Psychology, Representative for Neuropsychology, (1991-present) and Chair, Committee on Specialty Education Standards (1991-1997).

International Neuropsychological Society, Ad Hoc Committee for the A. L. Benton Award in Neuropsychology (1982).

International Neuropsychological Society, Program Committee for 1984 Meeting, Houston, Texas (1983).

International Neuropsychological Society, Chairman, Committee for the Dictionary of Neuropsychology (1987-1995).

International Neuropsychological Society, Governing Board (1995-1998)

Midwest Neuropsychology Consortium of Postdoctoral Fellowship Programs. Chairman (1988-1992).

United States Department of Education, National Institute on Disability and Rehabilitation Research (OSERS), National Invitational Conference on Traumatic Brain Injury Research, Washington, D.C. (November 2-4, 1987).

World Federation of Neurology, Research Group on the Dementias (1985-present).