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

这是一篇关于研方法论的论，描述了如何进行道德和道德行为的化研。

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

我们为何要研？这个题还没有化的方式研过。

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，那就可有理由建立一个实验室，那种方式研化状况。

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化研， 比较了不同国家之间的这些偏见，在这项研中， 美国和印度之间存在偏见。