advertisement
15 January 2013

Chimpanzees have a sense of fairness

Chimpanzees have a sense of fairness previously believed to be uniquely human, according to a small new study.

0

Chimpanzees have a sense of fairness previously believed to be uniquely human, according to a small new study.

The study included six adult chimpanzees and 20 human children, aged two to seven, who played what is called the Ultimatum Game.

In the game, a participant chose between two different coloured tokens that, with a partner's cooperation, could be exchanged for rewards. The chimpanzees were offered food and the children were offered stickers.

One colour of token provided equal rewards to both partners, while the other colour favoured the individual making the choice and shortchanged their partner. The chooser had to give the token to the partner, who then exchanged it with a researcher for the reward. This way, both partners needed to be in agreement.

What the study found

Both the chimpanzees and the children responded in a way typically seen in adult humans. If the partner's cooperation was required, the chimpanzees and children split the rewards equally. But if an individual had a passive partner who had no chance to reject the offer, the chimpanzees and children chose the selfish option.

The findings, published online in the new issue of the journal Proceedings of the National Academy of Sciences, suggest that a sense of fairness comes from a common ancestor of both humans and apes, said the researchers at the Yerkes National Primate Research Center at Emory University in Atlanta.

"Until our study, the behavioural economics community assumed the Ultimatum Game could not be played with animals or that animals would choose only the most selfish option while playing," study co-author Frans de Waal said in a university news release. "We've concluded that chimpanzees not only get very close to the human sense of fairness, but the animals may actually have exactly the same preferences as our own species."

Read more:
Why chimps and humans are genetically different

More information

The Jane Goodall Institute has more about chimpanzees.


(Copyright © 2012 HealthDay. All rights reserved.)

 
NEXT ON HEALTH24X
advertisement

Read Health24’s Comments Policy

Comment on this story
0 comments
Comments have been closed for this article.

Live healthier

Hello? »

SEE: Interesting facts about hearing loss Earworms: Let it go Is it bad to sleep with earplugs all the time?

SEE: Do women hear better than men?

The reason why men often appear not to be listening could be because they actually can't hear you.

Confident smile? »

Acidic drinks can harm your kids' smiles The facts on bleaching your teeth Am I taking good care of my teeth?

Why are my teeth stained?

We know the rules – brush your teeth twice a day and floss to keep them healthy. But, have you ever wondered what causes those stains that sometimes appear?