A neurologist from Germany has discovered an area of the brain that influences people to kill, rape and commit other crimes.
Dr. Gerhard Roth found the "evil patch" in a deep part of the brain inside the central lobe. It looks like a dark mass on X-rays.
Roth found the patch when he was investigating convicted offenders in German government studies.
"We showed these people short films and measured their brain waves," Roth said. "Whenever there were brutal and squalid scenes the subjects showed no emotions. In the areas of the brain where we create compassion and sorrow, nothing happened."
All scans of people who had records of criminal violence demonstrated a dark mass in the brain.
These studies led Roth to believe that many murders, rapists, and criminals have a genetic predisposition to violence.
"When you look at the brain scans of hardened criminals, there are almost always severe shortcomings in the lower forehead part of the brain," he said. "There are cases where someone becomes criminal as a result of a tumor or an injury in that area, and after an operation to remove the tumor, that person was completely normal again."
But just because a person has violent tendencies, does not mean that person will become a criminal.
Roth said that those with the dark patch are 66 percent likely to turn into a felon.
A number of factors seem to be involved in the making of a criminal. Roth devised them into three groups.
The first group are "psychologically healthy" people who are in an environment as children that teaches them it is okay to "beat, steal and murder."
The second group are the mentally disturbed who believe the world is out to get them.
The third group is made of psychopaths, including tyrants like Hitler and Stalin.
Roth said anti-social behavior is detectable from very early on.
"Experts detect a mental decline in some people that begins in kindergarten. It is the task of society to offer widespread support to the children and their parents before they become criminals," he explained.