It was a treatise on research methodology, describing how to do cross-cultural studies of morals and moral behavior.

这是一篇关于研究方法论的论文，描述了如何进行道德和道德行为的跨文化研究。

Why do we study sleep? Sleep is something that has really been an unexplored topic cross-culturally.

我们为何要研究睡？睡这个题还没有以跨文化的方式研究过。

And if everything looks promising, then it will justify trying to build a sleep lab and study sleep across cultures that way.

如果各种迹象看起来都比较好的，那就可以有理由建立一个睡室，以那种方式研究跨文化睡状况。

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.

但这并不完全正确， 我们知道，通过一些非常有趣的跨文化研究， 比较了不同国家之间的这些偏见，在这项研究中， 美国和印度之间存在偏见。