THOMAS E. BACKER is President of the Human Interaction Research Institute, a Los Angeles-based nonprofit center for research on knowledge utilization and organizational change in health care and human resources. He is also Associate Clinical Professor of Medical Psychology at the UCLA School of Medicine. Dr. Backer is the author of more than 250 books, articles, and research reports, including Strategic Planning for Workplace Drug Abuse Programs, and a forthcoming book on uses of mass media for public health education. He is a Fellow and past-President of the American Psychological Association’s Division of Consulting Psychology and of the Knowledge Utilization Society.KIRK B. O’HARA is a Senior Consultant with Fuchs, Cuthrell, and Co., Inc., in Los Angeles and Research Scientist at the Human Interaction Research Institute. He is the co-author (with Thomas E. Backer) of Drug Abuse in the Workplace: An Annotated Bibliography 1977-1988. Dr. O’Hara also has published numerous articles for various scholarly journals.