John Preston, PsyD is a licensed psychologist, professor emeritus with Alliant International University, Sacramento California and formerly a faculty member with UC Davis Medical School and the Professional School of Psychology, San Francisco. He has written 21 books dealing with topics such as: psychotherapy, psychiatric medication treatment, PTSD, bipolar disorder, depression, grief, emotional healing, spiritual aspects of human suffering and healing.
Dr. Preston has presented continuing education workshops for the past 25 years and has spoken in the United States, Canada, Russia, Africa, and Europe.
He is the author of "Drugs in Psychiatry" chapter in the Encyclopedia Americana.
