What happens when two monkeys are paid unequally for performing an identical task? Do monkeys have a sense of fairness? If they are allowed to witness the discrepancy, will it be acceptable to them or ...

Humans aren’t the only ones who hate a bum deal, it turns out. In a recent study, brown capuchin monkeys trained to exchange a granite token for a cucumber treat often refused the swap if they saw ...

Sept. 18 -- It turns out monkeys, like people, are no fools when it comes to equal pay for equal work. A new study found when brown capuchin monkeys noticed their partners were getting a better reward ...

In a TED talk, primatologist Franz de Waal jokes that a philosopher wrote to him that it isn’t possible for monkeys to have a sense of fairness since fairness wasn’t invented until the French ...

It turns out monkeys know when they get a raw deal – which, in this case, is a cucumber. In a study being published today, scientists report that for the first time a species of nonhuman primate knows ...

When Occupy Wall Street and similar protests played out over the past year, the phenomenon looked familiar to Emory University primatologist Frans de Waal: He's seen similar moral outrage over ...