该结果依据《美国社会学评论》刊登的一项研究——通过跟踪学生从三年级到五年级的表现做的研究。
That's according to a study that followed students from the third grade through the fifth, published in the journal American Sociological Review.
不过，这所大学使用这项技术的范围其实相当特别――它需要有一种便捷的方式，管理及跟踪学生和员工对打印机和复印机的使用。
The university's use of the technology, however, has been fairly specific in its scope – it wanted a convenient way of managing and tracking student and employee use of printers and copiers.
另外，我们长期跟踪学生，了解他们在打工时间增加或减少时的表现。 而且，我们还评估了不同的打工模式如何改变学习成绩和学习参与度。
Additionally, we followed students overtime as they increased or decreased their work hours, and we assessed how different patterns of employment alteredschool performance and engagement.
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