Why Are Humans Wired for Fairness Like Monkeys?

TL;DR

Humans and capuchin monkeys are wired for fairness, as evidenced by their reactions to unequal rewards. This sense of fairness is crucial for fostering cooperation, maintaining social systems, and preventing exploitation within relationships. As inequalities rise, the innate drive for fairness becomes increasingly important for societal stability and cooperation.

Transcript

Transcriber: Ivana Korom Reviewer: Krystian Aparta My first year in graduate school, studying cooperation in monkeys, I spent a lot of time outside, just watching our groups of capuchin monkeys interact. One afternoon, I was out back feeding peanuts to one of our groups, which required distracting one of our males, Ozzie, enough so that the other m... Read More

Key Insights

• 🐒 Monkeys, specifically capuchin monkeys, display a sense of fairness and a desire for equal rewards when working together with their group.
• 🍊 The capuchin monkeys showed a preference for oranges, a higher-value commodity, over peanuts when given the choice.
• 🤝 The sense of fairness in humans is tied to cooperation, as fairness helps maintain equitable relationships and avoid exploitation.
• 💼 Humans value fairness in the workplace, as evidenced by their reaction to unequal distribution of work and rewards.
• ♀️ Capuchin monkeys refuse to cooperate with other monkeys who do not give them their fair share, indicating a desire for equality and reciprocity in relationships.
• 🐵 Humans and primates alike are more upset when they receive less than others rather than when they receive more, highlighting the importance of fairness in relative terms.
• 🌍 The rise in protests and uprisings around the world can be attributed to a sense of unfairness and inequality, stemming from our evolutionary inclination to reject unfairness and social stratification.
• ⚖️ Recognizing and addressing unfair advantage, as well as promoting fairness and cooperation, is crucial for maintaining a cooperative society and preventing societal breakdown.

Questions & Answers

Q: What did the researcher observe Ozzie, the capuchin monkey, doing to try to receive peanuts?

The researcher observed Ozzie bringing various objects from his enclosure to trade with the researcher in exchange for peanuts.

Q: What did the researcher find surprising about Ozzie's behavior?

The researcher found it surprising that Ozzie was willing to trade items that he actually liked better than peanuts, such as a piece of orange, in order to obtain a peanut.

Q: How did the researcher test the monkeys' preferences for different foods?

The researcher asked the monkeys to choose between two types of food and observed which option they preferred. Monkeys, like humans, tended to prefer sweeter foods over vegetables or monkey chow.

Q: What did the researcher's study involving two monkeys trading tokens reveal?

The study revealed that one monkey's preference for a reward was influenced by what reward the other monkey received. The monkeys were less satisfied with their cucumber reward when they saw the other monkey receiving a grape, a more preferred reward.

Q: Why do humans often react strongly to inequality or unfairness?

Humans have a sense of fairness because it helps to regulate cooperation. When individuals feel they are being treated unfairly, it can lead to feelings of exploitation and a breakdown in cooperation.

Q: How did the capuchin monkeys respond when faced with inequality in another study?

The capuchin monkeys refused to cooperate with other monkeys who did not provide them their fair share of rewards. They preferred no reward at all over receiving less than another monkey.

Q: How does fairness contribute to maintaining cooperative partnerships?

Fairness is important for maintaining cooperative partnerships because it ensures that each individual receives their fair share. This encourages individuals to continue participating in cooperative relationships rather than feeling exploited.

Q: What connections can be made between the sense of fairness in humans and cooperation?

Some economists suggest that the sense of fairness in humans is tied to cooperation. Fairness helps individuals recognize when they are getting the short end of the stick and motivates them to seek balanced and fair transactions in cooperative relationships.

Summary & Key Takeaways

• Capuchin monkeys exhibit a sense of fairness by reacting negatively when they receive less desirable rewards compared to their peers.

• This sense of fairness is tied to cooperation and is necessary for maintaining balanced and cooperative relationships.

• In humans, the sense of fairness is crucial for social systems and economic participation, and protests against inequality are a manifestation of our inherent need for fairness.