Neuroscientist Jim Fallon studies human behavior via brain scans and genetic analysis. He tries to unravel the mystery of the nature of murderers.
How does he do this?
He examines brains, in an effort to discern the differences between a person who is capable of the malicious action of murder and one who is not. He dissects the brains of normal individuals and those of known murders and notates any differences.
Fallon states that there are different kinds of psychopaths. Watch the short (7 mins) TED Talks video below to learn more.