Ravens remember the faces of people who duped them into unfair deals

Don’t mess with ravens.

Dogs and capuchins judge you as ‘good’ or ‘bad’, hint at the birth of human morality

Something as simple as opening a jar goes a long way with anyone. Even other species.

Fighting unfairness at a tender age

A study by researchers at Harvard University found that children from a tender age have an advanced idea of fairness and are willing to step forward and pay a personal price to intervene a situation they perceive as an unfair. This decision is group-biased dominant in children aged six or less, but those aged eight or more were found to intervene in unfair situation and stop any selfish behavior, whether or not the victim was a member of their group.

Chimpanzees have a sense of fairness

Chimpanzees have the same sense of fair-play as humans do, explain researchers who played the Ultimatum game with them – it’s the first time such a trait was observed in a non-human species. Playing a fair game The Ultimatum game is a simple game often used in economy game theory in which the two players involved interact to decide how