SIPC did a survey of the U.S.population and this is one of the--In 2001, this is one of the questions SIPC asked.

证券投资者保护公司做过全民调查,在2001年,证券投资者保护公司调查问卷的问题之一

耶鲁公开课 - 金融市场课程节选

National Public Radio asked exactly this question in a survey a year or so ago and they got the following principal responses back.

国家公共广播电台问过,完全相同的问题,在一次一年前的民意调查中,他们得到了如下的回复

耶鲁公开课 - 聆听音乐课程节选

There have been some interesting surveys about people's relationship with food and the Pugh Foundation did a survey that was published in April of 2006 that asked people how much found out what percentage of people really enjoy eating.

有很多有意思的调查研究,关于食品,和人际关系的联系,其中皮尤基金会,2006年4月发布的一项调查试图解析,究竟有多少人能真正从饮食中获得享受

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选