John Preston, Psy.D., ABPP is a Professor with Alliant International University (California School of Professional Psychology), Sacramento. He has also taught with UC Davis, School of Medicine. He is the author of eighteen books on various topics including depression, psychotherapy, psychopharmacology, borderline disorders, and post-traumatic stress disorder. His book, Handbook of Clinical Psychopharmacology for Therapists was the year?s number one bestseller with the Behavior Sciences Book Club. He is the author of ?Drugs in Psychiatry? chapter in the Encyclopedia Americana. Dr. Preston is the recipient of the Mental Health Association?s President?s Award for contributions to the mental health community and the California Psychological Association?s ?Distinguished Contributions to Psychology? award. He has lectured in the United States, Canada, Europe and Russia.