in trauma, or lack of proper nutrients in diet.(1) In 1969 a psychologist by the name of Williams used an EEG on 333 men convicted of crimes and found that out of the 206 men who had a history of crimes has a disruption, or dysrhythmias, in the temporal lobes. Following the genetic track of aggression is the undeniable fact that aggressive behavior also declines sharply with age.(10) Another physiological factor that might affect the aggressiveness and even violence level of a person is that of cerebral trauma, especially diseases. These people who exhibit an "impairment of the control systems of the brain" also have been known to occasionally suffer from persistent brain immaturity, brain damage, or toxic impairment of the brain. There has also been presented the single-gene notion about psychopath or sociopath behavior. Researchers have found that significant number of prisoners have an extra sex chromosomes, for example an "XXY" or "XYY".(12) Their being in jail does not seem to be the root of their problem but rather it seems to stem from "their low level of intelligence," which is inherently a genetically influence aspect, according to Robert A. Baron.(10) In post-war studies, studies of the most aggressive of all activities, there have been similarities found with soldier. For example several senior U.S. Air Force officers have stated that when the Air Force tried to pre-select fighter pilots after world war two the only common denominator between their WWII aces was that they had all been involved in numerous altercations as children. Not as bullies but rather as fighters, the type of person who would not back down once attacked or hurt. This seemed like a strange connection between the type of job and a similarity in childhood activities, because significantly less than a third of school populations engage in fights on a regular basis. This seems to point at a genetic capacity for violence and aggression. More informally, Gwynne...
