Stephen M. Johnson, Ph.D., is a professor and chair of the faculty at Pacific Graduate School of Psychology in Menlo Park, California. He divides his time between clinical teaching and the private practice of psychotherapy in Menlo Park and San Francisco.

"Stephen Johnson’s Character Styles is a scholarly exploration of the most profound psychological mysteries: what determines human behavior and what we can do about its destructive manifestations. Dr. Johnson’s response to this challenge is distinguished by a vastly informed, deeply felt intelligence. Together with his previous three volumes, Character Styles provides a major contribution to the literature of the healing arts."