And this is one of the questions which I'm going to deal with in the next couple of lectures but before I get to the theory of social psychology I want to talk about an individual difference.

而这其中一个问题就是,我会在这两节课里讲的,但首先我们来了解社会心理学的理论,我想讲一个个体差异。

耶鲁公开课 - 心理学导论课程节选

The idea was developed by the social psychologist Leon Festinger and it's called "Cognitive Dissonance Theory."

这个理论由社会心理学家Leon，Festinger提出的,被称为“认知失调理论”

耶鲁公开课 - 心理学导论课程节选