He decided to send himself and his students to different places including shopping malls and observe when people laughed and write down what made them laugh.
除了他自己,他还派他的学生,去各种各样的地方,包括购物商场,观察人们在什么时候会笑,并写下让他们笑的原因。
耶鲁公开课 - 心理学导论课程节选
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