A neuroscientist was looking at his own brain scan and realized... he is a psychopath.
James Fallon was stunned at the discovery, but those around him were less surprised. He wanted to know: why was he a nonviolent psychopath? Can typical psychopathic behavior -- a lack of empathy and narcissism -- be changed with effort? Fallon's story is fascinating, and especially now, with such a focus on mental illness and gun-based violence.
We welcome James Fallon for the hour; his book is called The Psychopath Inside.