In this way, group behavior can be contagious.

这样，群体行为就可以具有传染性。

The writers spoke with people who study culture and group behavior, as well as those who study the psychology of individuals.

编剧们咨询了很多研究文化和群体行为以及个体心理的专家。

As we've mentioned before, proving any sort of group behavior in the fossil record is really hard.

正如我们之前提到的，要在化石记录中证明任何一种群体行为都非常困难。

For the two-thirds of us who would shock someone to death in the right circumstance, there's another third who wouldn't, reminding us that while group behavior is powerful, so is individual choice.

对于我们中有三分之二的人会在适当的情况下将某人电死，还有三分之一的人不会，这提醒我们，虽然群体行为很强大，但个人选择也很强大。