It ruled a wide-reaching empire. This week in our series, we look at how British power gave way to American influence after World War Two.

VOA: special.2011.08.04

In many ways, psychologist-- social psychologist for sure-- was sponged by a series of research that was done on the power of the situation, but it was mostly the negative power of the situation.

在很多方面，心理学家-,肯定地说是社会心理学家-,都会被在情境之下完成的,一系列研究所影响，但多数是消极的情境。

哈佛公开课 - 幸福课课程节选