What Happens When Two Monkeys Are Paid Unequally?

This is what happens when two monkeys are paid unequally.

In an experiment focused on measuring moral behavior in animals, two monkeys were each taught to place a rock into a scientist’s hand.

After each monkey completed this, they would then be rewarded with a snack: a cucumber and a grape.

When the monkey who received the cucumber realized the fellow on the other side of the fence was receiving more grapes than he was for doing the same task, he began exhibiting pure frustration.

This, according to Frans de Waal, comes close to a human sense of fairness which makes it all the more fascinating to watch.

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