John Preston, Psy.D., ABPP, is a professor with Alliant International University (California School of Professional Psychology), Sacramento. He has also taught at UC Davis, School of Medicine. He is the author/co-author of 21 books on various topics including depression, psychotherapy, psychopharmacology, borderline disorders, bipolar disorder, and post-traumatic stress disorder. He is the author of "Drugs in Psychiatry" chapter in the Encyclopedia Americana as well as Integrative Treatment for Borderline Personality Disorder: Effective, Symptom-Focused Techniques, Simplified for Private Practice. 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, Africa, and Russia.