Robert Frank once made this comment about his work: "I am always looking outside, trying to look inside, trying to say something that is true.

VOA: special.2009.03.23

A lot of the work is done by Robert Provine who summarizes this in his excellent book Laughter.

很大研究都是Robert，Provine做的,他在一本很好的书《笑》中总结了他的研究。

耶鲁公开课 - 心理学导论课程节选

Robert Hawkins is associate professor of social work at New York University.

VOA: special.2010.11.22