Biological theorists suggest that aggression is caused by some genetic or biological factor. Maxon (1998), a leading theorist proposed a theory that one's genes affect one or more types of aggression in mice, which may be applied to humans as a genetic explanation of aggression. Many researchers believe that aggression is caused by some genetic or biological factor, and thus believe that cases involving aggression should be treated chemically. These views of genetic or material essentialism claim that not only are physical characteristics of an individual determined by genetic information, but one's social roles, behaviors, and relationships also have a biological-genetic base (Kegley, 1996).
Growing evidence points to the conclusion that biological factors do predispose some individuals toward aggression. Through much research, it was found that people who suffer from reduced levels of serotonin are more likely proned to suffer from reduced abilities to control their aggressive impulses. These findings lend support to the view that biological factors do indeed play an important role in at least some forms