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1 .This is Scientific American 60-Second Mind, I'm Christie Nicholson. Got a minute?
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2 .Psychopaths are responsible for a disproportionate amount of crime.
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3 .These people are primarily identified by an extreme lack of empathy.
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4 .Now a study finds that when psychopaths see images of people in pain,
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5 .there's a pattern of activity in their brains that is quite different from brain activity in non-psychopaths.
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6 .Researchers tested 80 prisoners to gauge their levels of psychopathy.
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7 .They then scanned the prisoners' brains using functional MRI as the prisoners were shown photos of people being intentionally hurt.
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8 .Participants who scored high in psychopathy traits, versus those who were not considered psychopaths,
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9 .showed much less activation in the areas of the brain involved in emotional reactions, social behavior and decision making.
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10 .The study is published in the journal JAMA Psychiatry.
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11 .Unexpectedly, when viewing the photos the psychopaths experienced significant activity in the insular cortex, which is involved in emotion and self-awareness.
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12 .The researchers conjecture that the reaction may have been due to the prisoners ability to imagine themselves in pain.
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13 .In a still unpublished study with other inmates, subjects were specifically told to imagine the painful event happening to someone else.
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14 .In that case, those scoring high in psychopathy had a lesser reaction.
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15 .The psychopath thus seems able to relate to pain, as long as it's his own.
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16 .Thanks for the minute, for Scientific American 60-Second Mind. I'm Christie Nicholson.
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