Here are a few of the sources I used, and I heartily recommend them: Simon Baron-Cohen, The Science of Evil; Judith Beck, Cognitive Behavior Therapy; Louis Cozolino, The Making of a Therapist; Kevin Dutton, The Wisdom of Psychopaths; James Fallon, The Psychopath Inside; Peter and Ginger Ross Breggin, Talking Back to Prozac; Robert D.