Machines Like Us

Advanced brain-imaging techniques have begun to point to specific brain patterns common among sociopaths.

"I had to do it. What other choice did you give me?"

These words, spoken by Cho Seung-Hui on a video in between the two sets of killings at Virginia Tech last week, raise more questions than answers. What made him believe that such a tragic act was necessary? Was he a psychopath, a man who killed in cold blood or in anger set off by the slightest provocation? Did he embody what most religions would simply classify as "evil"?

Psychiatrists and neuroscientists are making extraordinary advances in understanding the psychopathic or sociopathic mind, a mind that lacks empathy, compassion, fear, or remorse. In some of the most exciting research, advanced brain-imaging techniques are revealing that certain sections of psychopaths' brains seem to be misfiring.

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