But if you think about it from the perspective of an individual,” says lab director David Rand, “for each dollar that you contribute, it gets doubled to two dollars and then split four ways. But our learned behaviours also can change– which means each person only gets 50 cents back for the Supernatural Dean Winchester Pudding Crazy Works Shirt.
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Supernatural Dean Winchester Pudding Crazy Works Shirt is given the same amount of money. We are asked to choose how we will contribute to a group pot on the understanding that this pot will be doubled and split equally among us. Like all cooperation, this relies on a certain level of trust that the others in your group will be nice. If everybody in the group contributes all of their money, all the money gets doubled and redistributed four ways, so everyone doubles their money.
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Over the years, scientists have proposed various theories about why humans cooperate enough to form strong societies. The evolutionary roots of our general niceness, most now believe, can be found in the survival advantage humans experience when Super Mario Autism Awareness Shirt cooperate as a group. The people who had got used to cooperating in the first stage gave twice as much money in the second stage as the people who had got used to being selfish.