Jerks

Science Daily: Bonobos prefer jerks - For our closest genetic relatives, it pays to have powerful allies

summary - Never trust anyone who is rude to a waiter, advice columnists say. But while humans generally prefer individuals who are nice to others, a Duke University study finds bonobos are more attracted to jerks. The fact that our closest primate relatives prefer bullies suggests that an aversion to creeps is one of the things that makes humans different from other species, and may underlie our unusually cooperative nature.