四十年前，心理学研究者保罗·埃克曼博士给一群年轻的精神病医生做培训演讲时，有人向他提出了一个疑问，自此他一直忙于寻找该问题的答案。
Forty years ago, the research psychologist Dr Paul Ekman was addressing a group of young psychiatrists in training when he was asked a question whose answer has kept him busy pretty much ever since.
William F . Fry是斯坦福大学的一名精神病学家同时也是一位发笑行为的研究者，他解释道。
William F. Fry, a psychiatrist and laughter researcher at Stanford University, explains.
研究者总结道：创造型的人会表现出更多的像冒失这样的精神病者的特性。
Creative people were found to show more psychopathic traits, such as boldness, the researchers concluded.
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