To what extent are all of us composed of multiple people, and to what extent are we a single unified person over time?

我们究竟在多大程度上,是由多种人格组成的,又在多大程度上是一直由单一人格组成的

耶鲁公开课 - 心理学导论课程节选

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?

我们从旁观者效应的实验中知道,我们在哪种情景上更可能出手相救，一个人，还是有其他人时？

耶鲁公开课 - 心理学导论课程节选