Humans banded together instead of working more as individuals and started hunting animals in groups, groups of animals hunted by groups of humans.

人类开始聚集在一起,而非单独行动,人类开始集体狩猎,集体狩猎帮助人类捕获大量的动物

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So, defeated political groups might well -or individuals who were the heads of those groups might decide they have to get out of town.

所以,政治上失利的一方,或者这方的领导人,会做出决定,离开城市

耶鲁公开课 - 古希腊历史简介课程节选

You're more likely--It's a subtle effect when you make the groups so minimal but you're more likely to give it to your own group than to others and this suggests that moral feelings are exquisitely attuned not necessarily only to individuals but also to the psychology of groups.

你很可能…这是微细效应,因为这些群体非常简单,你很可能把钱给自己群体，而不是对方,这表明道德情感是很细微的,不仅是针对个人而言,也是针对群体心理而言。

耶鲁公开课 - 心理学导论课程节选