他发现，他的许多研究对象都被金钱提供给他们的无穷无尽的选择弄糊涂了。

He found that many of his subjects were confused by the infinite options their money presented them with.

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他们的研究对象是草原田鼠，一种终生交配的小型啮齿动物。

Their study was conducted in the prairie vole, a small rodent that mates for life.

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研究人员承认，由于他们的研究对象都是以色列的中产阶级家庭，因此，研究结果有可能不适用于其他文化背景的家庭。

The researchers acknowledge that since the families they studied were all middle-class Israelis, it's possible the results would be different in different cultures.

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there were 250 kids who got nothing, who were also studied, 250 kids in the control group.

有另外250个孩子，他们什么也没得到，也列为了研究对象，250名对照组的孩子。

哈佛公开课 - 幸福课课程节选

Now, what they did was--they were clever psychologists so they set it up in a study where the people did not know sexual orientation was at issue.

他们都是聪明的心理学家,他们设计了一个实验,实验对象并不知道研究的是同性恋问题。

耶鲁公开课 - 心理学导论课程节选