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John D Preston, PsyD, Abpp

John D. Preston, PsyD, ABPP , is a licensed psychologist, and author or coauthor of twenty books. He is professor emeritus of psychology at Alliant International University, and has also served on the faculty of the UC Davis School of Medicine. He has lectured widely in the United States and abroad. He is the recipient of the Mental Health Association's President's Award for contributions to the mental health professions, and is a fellow of the American Psychological Association.