对照组的学生不仅成绩没有提高，而且比研究开始前的成绩还要低。

Those in the control group not only didn't see a grade increase, they had lower grades than the grading before the study began.

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研究经营管理比研究过去的业绩得到的有用信息更多。

Studying the management will give you more useful information than yesterday’s performance.

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过去了两年半的时间之后，他们仍比研究开始的时候重三千克。

After two and a half years they were still more than three kilos heavier than when the study began.

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And the "average"-- whatever that means, the "average" benefits even more than the best of this kind of studies.

而所谓的“大众，在这种研究中,“大众“比“精英“受益更多。

哈佛公开课 - 幸福课课程节选

The title of the book, Stocks for the Long Run-- stocks always outperform other investments for the long run and he says it's not due to selection bias.

书名是为《股市长线法宝》,长期投资中股票总是比其他资产有更高的收益,他认为他在研究中排除了选择性偏差

耶鲁公开课 - 金融市场课程节选

Sometimes it even makes her less happy than she was before.

有时这研究让她比以前更不快乐。

哈佛公开课 - 幸福课课程节选