|E. O. Wilson sociobiology
E. O. Wilson didn’t invent sociobiology, but he wrote the textbook on it, asserting that social behaviors have evolved as have physical traits, but he raisied controversy by his application of sociobiology to human societies, showing that even humans have instinctual behaviors, and that kin or group selection supports altruism.
Nature versus nurture
Cultural universals suggest something is natural about many human behaviors. Some thought that what made humankind human was the lack of instinctual behavior. Behavioralists taught they could train anyone to do anything whatsoever when they grew up. Others maybe didn’t want to give anything credit other than their own efforts.