There is social, which is the study of how people act in groups, how people act with other people.

还有社会心理学,主要研究人类的群体行为,如何与他人交流

耶鲁公开课 - 心理学导论课程节选

Tajfel The psychologist Tajfel after World War II was interested in the question of what could make a group.

二战后一位心理学家,很有兴趣研究群体是如何形成的。

耶鲁公开课 - 心理学导论课程节选

And this is where I want to end this section on social psychology by talking about groups.

所以我想在这两节,社会心理学课最后谈一下群体。

耶鲁公开课 - 心理学导论课程节选