"New research from Vanderbilt University shows for the first time that the brain processes aggression as a reward – much like sex, food and drugs –
offering insights into our propensity to fight and our fascination with violent sports like boxing and football.
“Aggression occurs among virtually all vertebrates and is necessary to get and keep important resources such as mates, territory and food,”
Craig Kennedy, professor of special education and pediatrics, said.
“We have found that the ‘reward pathway’ in the brain becomes engaged
in response to an aggressive event and that dopamine is involved.”, 14.01.08, vanderbilt.edu