I got interested in this--well, I got interested in this as a developmental psychologist watching my own children laugh and trying to figure out what it is that made them laugh.

我对笑感兴趣…,身为一个长成心理学家,当我看到我孩子笑时，我就对这个议题感兴趣了,我想弄明白是什么令他们笑的。

耶鲁公开课 - 心理学导论课程节选

And this is my colleague, Marianne LaFrance, who is actually not smiling in that picture but she studies smiling and smiling in adults, smiling in children, smiling across cultures, and the different social uses of smiling.

另一位是我的同事，法国人玛丽安，她在照片上没有笑,但她研究微笑，成人的微笑，孩子的微笑，文明的微笑，微笑的不同社会功用。

耶鲁公开课 - 心理学导论课程节选