Gregory SweitzerGREGORY SWEITZER, MSW, MA, Psy.D., C.Psych., is a clinical and rehabilitation psychologist with over 40 years of psychotherapy experience. He began writing about infectious misbehavior in 1988. His first book on this subject, Psychic Illness: The Ris and Fall of Evil on Earth, was published in 2001. The revised second edition of Psychic Illness is in preparation. Read More Read Less