Humans aren't the only ones who cry "no fair." In a classic test of fairness called the ultimatum game, apes will dole out an equitable share of their bananas — and when they don't, their partners will complain, a new study shows.
The findings, published today (Jan. 14) in the Proceedings of the National Academy of Sciences, suggests that humans and chimpanzees may share an evolved sense of fairness common to many cooperative species, said lead study author Darby Proctor, a primatologist at Emory University.
"If you're involved in some cooperative act you need to be sure you're engaging in something that's beneficial to you," Proctor told LiveScience. "Comparing your rewards with others' seems like it would be really, really important."
Read more at LiveScience.
