By Susan Donaldson James, ABC News, Nov. 30, 2013

James Fallon admits he has a lot in common with serial killer Ted Bundy and Columbine assassin Eric Harris. He is aggressive, lacks empathy and is a risk-taker.

Fallon, a professor of psychiatry and human behavior at the University of California Irvine, accidentally discovered what friends and family have suspected for years -- he has all the genetic traits and brain scan patterns of a psychopath.

"When somebody gets mad at me, I never show it -- they can't read it on my face," Fallon, 66, told ABCNews.com. "I never get even immediately, but four years down the road, I get them with revenge. I don't have special emotional bonds with those who are close to me -- I treat everyone the same," he said. "I am involved in a lot of charities and good works, and my intentions are good for the world. But I don't have the sense of romance or love I am supposed to have for my wife. It's not there."

But Fallon is not a mass murderer and in his new book, "The Psychopath Inside: A Neuroscientist's Personal Journey Into the Dark Side of the Brain," he tries to understand why [....]