Monkeys express spite toward those who have more

Monkeys, like humans, will take the time and effort to punish others who get more than their fair share, according to a study conducted at Yale. In fact, they can act downright spiteful.

Research reveals new clues about how humans become tool users

New research from the University of Georgia department of psychology gives researchers a unique glimpse at how humans develop an ability to use tools in childhood while nonhuman primates—such as capuchin monkeys and chimpanzees—remain ...

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