tokens: Consistent with the expectations of the male warrior hypothesis , several studies have shown more ethnocentric and xenophobic beliefs and behaviors among men ( compared to women ) , including the more frequent use of dehumanizing speech to describe outgroup members ; stronger identification with their groups ; a greater desire to engage in war when presented with images of attractive ( but not unattractive ) members of the opposite sex ; greater overall rates of male-male competition and violence ( as shown in violent crime and homicide statistics ) ; and larger body size correlating with quicker anger responses .