In fact, they calculate that a one-hour increase in weekly sleep raises wages by about half as much as an additional year of education.

事实上，他们计算出每周睡眠增加1小时，薪水涨幅相当于多受一年教育的一半。

Now, the story is not so simple. Don't think you can start to sleep more and you will instantly make more money. It's more about the subtle interplay between how people schedule their lives, how much time they have available to sleep and how that affects worker performance and, ultimately, earnings.

事情没那么简单。不要以为你开始多睡觉就能立刻赚得更多。关键是人们如何安排自己的生活、有多少时间可以睡觉以及这是如何影响员工表现并最终影响薪资，这些问题间微妙的关系才是重点。

To investigate how sleep affects worker wages, the researchers took advantage of a kind of natural experiment - sunset times across American time zones. Past research shows that people naturally end up sleeping longer when the sun sets earlier, for example in the winter, even if the person goes to bed well after dark. When the sun sets an hour later, it reduces nighttime sleep by roughly 20 minutes per week.

为了研究睡眠究竟怎样影响员工工资，研究人进行了一项自然试验——利用美国时区日落时间。过去的研究显示，当日落较早时，人们的睡眠会自然而然变长，即使是天黑很久后才睡觉也一样，比如冬季时。当日落较晚时，人们平均每周的睡眠时间大约减少20分钟。

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