translation.en: But what he found was, these categories mattered, so when he later gave the subjects money, they would prefer to give the money to members of their own group than members of the other group.
translation.zh: 但他发现，这样的类别划分 是有作用的， 随后，他让这些青少年分配钱， 他们更愿意将金钱给予 他们本组的其他人 而不是另一个组别的人。