Aside from functional differences in the brain during magnetic resonance tomography (MRT) experiments, where subjects are shown images of ”cars, houses, holiday scenes, and images meant to arouse pedophiles”, there is also a “string of neuropsychological characteristics” says psychologist, Jorge Ponseti.
“For example, their intelligence quotient is about 8 percentage points lower than the average.
It’s also interesting that the age of the victim is related to the IQ of the abuser,” he added. “So the dumber the criminal, the younger the child. [via]