And they fall prey to the well-known bystander effect.

他们成为众所周知的旁观者效应的牺牲品。

The bystander effect is a bit like the concept of social loafing that we talked about.

旁观者效应有点像我们讲的社会懒惰的概念。

This kind of diffusion of responsibility referred to as the bystander effect, can weaken our instinct for altruism.

这种被称为旁观者效应的责任扩散，可以削弱我们利他主义的本能。

Finally, and most importantly, research shows that one of the best ways to mitigate the bystander effect is to build a shared social identity.

最后，也是最重要的是，研究表明，减轻旁观者效应的最佳方法之一是建立共享的社会认同。

Now, we know from the work in the Bystander effect that in general which one are we more likely to help in, when we're the only person or multiple?

现在，我们从旁观者效应的研究中知道，一般来说，当我们是唯一的人还是多人时，我们更有可能帮助哪一个？

You also learned about altruism, the bystander effect, and when we are more or less likely to help a person in need, and also about the social exchange theory, the reciprocity norm, the social responsibility norm, and social traps.

您还了解了利他主义、 旁观者效应，以及我们何时或多或少地帮助有需要的人， 以及社会交换理论、 互惠规范、社会责任规范和社会陷阱。