Psychopaths

Hare arrived at UBC in 1963, intending to follow up his doctoral research on punishment. Certain prisoners, it was rumoured, didn't respond to punishment, and Hare went to the federal penitentiary in New Westminster, British Columbia, to find these extreme cases. (He found plenty. In his chilling 1993 book on psychopathy, Without Conscience: The Disturbing World of the Psychopaths Among Us, he quotes one specimen's memories: "[M]y mother, the most beautiful person in the world. She was strong, she worked hard to take care of four kids. A beautiful person. I started stealing her jewellery when I was in the fifth grade. You know, I never really knew the bitch -- we went our separate ways.")

For his first paper, now a classic, Hare had his subjects watch a countdown timer. When it reached zero, they got a "harmless but painful" electric shock while an electrode taped to their fingers measured perspiration. Normal people would start sweating as the countdown proceeded, nervously anticipating the shock. Psychopaths didn't sweat. They didn't fear punishment -- which, presumably, also holds true outside the laboratory. In Without Conscience, he quotes a psychopathic rapist explaining why he finds it hard to empathize with his victims: "They are frightened, right? But, you see, I don't really understand it. I've been frightened myself, and it wasn't unpleasant."

In another Hare study, groups of letters were flashed to volunteers. Some of them were nonsense, some formed real words. The subject's job was to press a button whenever he recognized a real word, while Hare recorded response time and brain activity. Non-psychopaths respond faster and display more brain activity when processing emotionally loaded words such as "rape" or "cancer" than when they see neutral words such as "tree." With psychopaths, Hare found no difference. To them, "rape" and "tree" have the same emotional impact -- none.

Hare made another intriguing discovery by observing the hand gestures (called beats) people make while speaking. Research has shown that such gestures do more than add visual emphasis to our words (many people gesture while they're on the telephone, for example); it seems they actually help our brains find words. That's why the frequency of beats increases when someone is having trouble finding words, or is speaking a second language instead of his or her mother tongue. In a 1991 paper, Hare and his colleagues reported that psychopaths, especially when talking about things they should find emotional, such as their families, produce a higher frequency of beats than normal people. It's as if emotional language is a second language -- a foreign language, in effect -- to the psychopath.

"Psychopaths Among Us"