Hmmm...

Brain Abnormalities Linked to Pathological Lying

Pathological liars may have structural abnormalities in
their brains, a new study suggests.

Dr. Adrian Raine and Yaling Yang of the University of
Southern California, Los Angeles, and colleagues found
that individuals who habitually lied and cheated had less
gray matter and more white matter in their prefrontal
cortex than normal people.