A second force towards kindness is cooperation.

善良的第二个动力是合作
Even if animals are unrelated, they are nice to one another.

即使是不相关的动物也会友好相处
Animals will give warning cries, they will groom one another,

动物们会发出警告的叫声它们会为彼此梳理毛发
they will exchange food. And the reason for this is that animals have evolved,

它们会交换食物就是因为这样动物进化了
our minds have evolved, to enter into sort of cooperative situations with other

我们的思维进化了进化到与他人合作的情境
people and to surmount prisoner's dilemmas, to surmount deception and cheating.

克服囚徒困境克服欺骗
This gives rise to some emotion including emotions

这引起了一些情绪包括
that could be viewed as moral emotions, like guilt and anger, and again,

道德情绪如内疚和气愤并且再一次
grounds altruistic behavior in an evolutionary perspective.

从进化论的角度为利他行为提供依据
This is all by means of review but the question you can now ask is,

这些都是依靠回顾历史得出的结论但你现在可以问
"Fine. That's why moral feelings might evolve, but what do we know as

"好吧这是道德感进化的原因
psychologists about the emergence in nature of moral feelings in individuals?

但是我们作为心理学家是怎么理解个体天生的道德感的出现呢