Brown university professor of political science Rose McDermott has a fascinating guest post over at Political Violence @ a Glance:
There’s a dirty little secret that academics don’t like to talk about but explains why some individuals choose to fight. Some people, especially some men, like to fight. They even like to kill.
McDermott identifies two primary factors that make some people more likely to fight than others: testosterone (a familiar and well-established claim) and, more controversially, genes.
Read the full, original story: Are there genes that lead men to enjoy fighting?