“Pathological liars can’t always tell truth from falsehood and contradict themselves in an interview. “We looked for things like inconsistencies in their stories about occupation, education, crimes and family background,” said Raine, a psychology professor at USC and co-author of the study.
#PATHOLOGICAL LYING DISORDER SERIES#
A series of psychological tests and interviews placed 12 in the category of people who had a history of repeated lying (11 men, one woman) 16 who exhibited signs of antisocial personality disorder but not pathological lying (15 men, one woman) and 21 who were normal controls (15 men, six women).
The subjects were taken from a sample of 108 volunteers pulled from Los Angeles’ temporary employment pool. The research � led by Yaling Yang and Adrian Raine, both of the USC College of Letters, Arts and Sciences � is published in the October issue of the British Journal of Psychiatry. While previous research has shown that there is heightened activity in the prefrontal cortex � the area of the brain that enables most people to feel remorse or learn moral behavior � when normal people lie, this is the first study to provide evidence of structural differences in that area among pathological liars. A three-dimensional MRI image of the brainĪ USC study has found the first proof of structural brain abnormalities in people who habitually lie, cheat and manipulate others.
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