Eric Michael Johnson is my kind of science blogger

In my last post I asked for a science of human nature that acknowledged the need for social change. Well, ask and ye shall receive:

To illustrate how powerful the influence of culture can be for primate societies consider the most extreme example of a sexually coercive species: savanna baboons. Males have been known to viciously maul a female that has rejected their advances and the level of male aggression is strongly correlated with their mating success. However, in a unique natural experiment Stanford primatologist Robert Sapolsky observed what developed when the largest and most aggressive males died out in a group known as Forest Troop (because they were feeding at the contaminated dump site of a Western safari lodge). In the intervening years Forest Group developed a culture in which kindness was rewarded more than aggression and adolescent males who migrated into the troop adopted this culture themselves.