Researchers at the Yerkes National Primate Research Center at Emory University in Atlanta have found that when monkeys were given a choice of receiving a food reward, or receiving a food reward and also having another monkey receive food. When paired with relative or “friend” the monkeys primarily went for the “prosocial” choice,  but the monkeys weren’t so generous with strangers, choosing the “selfish” option instead.

Empathy increases in both humans and animals with social closeness, which is often explained by evolution. We help those most closely related to us, to make sure not just our own genes are passed on but that those genes of our family as passed on as well.

Still one may wonder whether giving is still a selfish to capuchins because they can eat together, or if the monkeys simply like to see the other monkey enjoying the food. In the study, eight adult female capuchins were given tokens to exchange for food. One token got them a slice of apple. The other also got an apple slice, plus a similar slice was given to another monkey they could see.

In a series of tests, when the “partner” monkey was a relative or a familiar female from the same social group, the one choosing the token moved closer to the partner and primarily choose the prosocial token that got them both food.

When the second monkey was a stranger, the selfish token was more likely to be chosen, often with the lead monkey turning her back to the stranger. Since the reward was the same for the monkey making the choice, de Waal suggested there must be some intangible benefit to the prosocial choice, perhaps an indication of empathy.

The study put in much effort to eliminate the possibility that the monkeys didn’t understand the task. They also made sure the monkey could always see the other monkey eat the food when they chose the “prosocial option.

Like we’ve found with humans, strict  Dawkinsian evolutionary theory, which asserts that people may seem to act altruistically but only do so if the benefit, is questioned here. If we believed in completely selfish behavior, might researchers find a difference between “prosocial” behaviors toward a friend and toward a relative? In this study, as with many altruism studies with humans, there was no such difference.

Empathy is important to understand for better communities, schools, and personal/professional relationships. Emapthic individuals are less likely to be anti-social and more likely to have strong social ties, better social skills, and more school and life success. There are many applications for increasing one’s empathy, such as teaching it in schools, teaching it to counselors and psychologists, and teaching it as an intervention for criminals and/or emotionally impaired (Autistic, Psychopathic) people. For instance, an important target for Learning by Teaching is to train students in empathy. They have to transmit new contents to the classmates, so that they reflect continuously on the mental processes of their classmates and teachers. This greatly enhances the social relationships of the students and learning that takes place in the classroom.

Regarding psychotherapy, there is an increasing demand to train psychologists to be more empathetic with their clients. In this context, empathy is exremely important for trust and optimal treatment.

Not only is empathy a vital skill in order to maximize social relationships, but empathy is also linked to happiness and general well-being. Martin Seligman originally hypothesized that unhappy people are likely to be more altruistic since they would be more likely to identify with the suffering of others. Findings of studies on mood and helping behaviors, however, showed that happy people are more likely to demonstrate altruism (Seligman, 2002). There is no evidence to show the direction of this relationship, so it very well may be that being altruistic causes happiness. Studies conducted by Isen, George, and Brief (1992) also showed that people are more willing to help others and engage in altruistic behaviors when they are happy. Hence, it can be proposed that altruism and happiness are reciprocal.

In short, happy people are altruistic and altruistic people are happy. We’ll just have to wait for a monkey-mood-measure to see if the same is true for our capuchin friends.