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The Roots of Morality

I don't often have posts that are little more than embedded YouTube videos, but this one was too good to pass up. A few months ago, Frans de Waal gave a TED presentation: Moral behavior in animals. I'd highly suggest following that link to watch his full presentation, but one of the videos he showed has been pulled out into it's own YouTube video. The video is of an experiment with capuchin monkeys. These monkeys had been trained to return a rock that a researcher gave them in exchange for a treat. It's important to note that capuchins like certain treats more than others. A piece of cucumber is decent, but they really like grapes. I suppose it would be like the difference in getting a piece of hard candy from your grandmother vs. crème brûlée in a 5 star restaurant (or substitue according to your tastes). In this particular experiment, there were two monkeys involved, each in a separate cage, but adjacent to each other so that they could see each other. The first monkey returned the rock to the researcher, and received a cucumber in return as a treat. The second monkey returned the rock to the researcher, but received a grape in return, which the first monkey clearly saw. Next, the researcher went back to the first monkey, and again gave it a cucumber in return for the rock. Watch the video below to see the monkey's reaction.

This may not be a full sense of morality as developed in humans, but it's certainly a part of it - recognizing an unfair situation. It amazes me just how human like the monkey's reaction is. It reminds me of how a young child with poor impulse control might react.

Now, I know there are dangers in over anthropomorphizing, but really, when we're so closely related to an animal, doesn't it make more sense to think that their thought processes are at least similar to ours, rather than thinking that humans evolved all these brand new and novel characteristics in an evolutionary blink of an eye?

I'll note that I first saw this on Jerry Coyne's Why Evolution Is True. Follow that link to read some good discussion of the video (along with some rather close minded remarks by one particular commenter).

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