Ed Diener University of Illinois professor Ed Diener does a lot of research on happiness levels.

伊利诺伊大学教授,就快乐水平作了大量研究。

哈佛公开课 - 幸福课课程节选

This is not entirely true though and we know that through some very interesting cross-cultural research that compares these biases across different countries, in this study between the United States and India.

这并不全对,我们知道,通过一些有趣的跨文化研究,拿不同国家的这些错误认识来作比较，例如这个拿美国和印度作比较的研究中。

耶鲁公开课 - 心理学导论课程节选

This is very important,which is why I am doing it: "If we want to know how fast a human being can run, then it is no use to average out the speed of a "good sample" of the population; it is far better to collect Olympic gold medal winners and see how well they can do.

这话非常重要，是我作这个研究的原因：,“如果想知道人类最快能跑多快，那从好的样本中测出平均数是“,没用的;,而应该收集田径类奥运冠军的信息,看他们能跑多快。

哈佛公开课 - 幸福课课程节选

So here is a longitudinal study that was done by John Carter.

所以下面讲讲John，Carter所作的纵向研究。

哈佛公开课 - 幸福课课程节选