Washington: Prisoners who are psychopaths lack the basic neurophysiological "hardwiring" that enables them to care for others, a new study has found."A marked lack of empathy is a hallmark characteristic of individuals with psychopathy," lead author of the study, Jean Decety, the Irving B. Harris Professor in Psychology and Psychiatry at University of Chicago said. Psychopathy affects approximately 1 percent of the United States general population and 20 percent to 30 percent of the male and female US prison population.
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