“Vanderbilt University scientists had discovered chemically testable differences between psychopaths and others. One was the variance in levels of dopamine, a naturally produced chemical that contributed to a person’s motivation and pleasure. Those scientists concluded that the elevated level of… — Michael Benson Copy Share Image
“Murderers with severe personality disorders, police had learned, sometimes could fool a lie detector because they lacked shame and guilt, and didn’t feel the… — Michael Benson Copy Share Image
“Vanderbilt University scientists had discovered chemically testable differences between psychopaths and others. One was the variance in levels of dopamine, a naturally produced chemical… — Michael Benson Copy Share Image
