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 ...

Monkeys were taught in an experiment to hand over pebbles in exchange for cucumber slices. They were happy with this deal. Then the researcher randomly offered one monkey – in sight of a second – an ...

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 ...

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 ...

Monkeys are our closest relatives in the evolutionary tree, are similar in all kinds of aspects, including one very important aspect that is- intelligence. Cognitive scientists, who study the ...

Monkeys were taught in an experiment to hand over pebbles in exchange for cucumber slices. They were happy with this deal. Then the researcher randomly offered one monkey - in sight of a second - an ...

Nicolas Kristof tells us all of a new book about to arrive which leads us through the facts about how human beings are all really very interested in equality. Like other books before it this one, The ...

In a study involving the exchange of tokens for food, Capuchin monkeys who got lesser treats than other Capuchins did basically went on strike and refused to continue "working." Karen Hopkin reports.