After a few years, it's hard to reconstruct the faces of the girls you knew. Eventually new sex images begin to appear, those of the surrogate females that are everywhere in the prison world. The majority of males who are incarcerated are doing time for violent crimes, including rape, murder, assault and violent burglary. While there is no exact explanation of criminal behavior, two theories which are currently being explored are psychological and genetic theories. According to Dr. Michael Clancy, a geneticist and professor at the University of Alaska, many people believe that crime is caused by psychological problems.
Criminals have weak egos and damaged personalities.
This same study shows that these criminals have an undeveloped or underdeveloped ability to control their behavior. Another explanation of criminal behavior is the genetic problem of an extra chromosome on the 23rd pair. Because more XYY males are in prison, that chromosomal defect is said to cause aggression and violence. Violence can mask an inmate's true self, however. With only a few years of prison left, McGranaghan is taking advantage of the education and various life lessons he is gaining.