Although numerous survey studies have reported connections between sleep and cognitive function, there remains a lack of quantitative data using objective measures to directly assess the association between sleep and academic performance. In this study, wearable activity trackers were distributed to 100 students in an introductory college chemistry class (88 of whom completed the study), allowing for multiple sleep measures to be correlated with in-class performance on quizzes and midterm examinations. Overall, better quality, longer duration, and greater consistency of sleep correlated with better grades. However, there was no relation between sleep measures on the single night before a test and test performance; instead, sleep duration and quality for the month and the week before a test correlated with better grades. Sleep measures accounted for nearly 25% of the variance in academic performance. These findings provide quantitative, objective evidence that better quality, longer duration, and greater consistency of sleep are strongly associated with better academic performance in college. Gender differences are discussed.

尽管许多调查研究报告了睡眠与认知功能之间的联系，但仍然缺乏使用客观指标直接评估睡眠与学习成绩之间关联的定量数据。在这项研究中，可穿戴活动跟踪器被分配给了大学化学入门班的100名学生（其中88名完成了研究），从而使多项睡眠措施与测验和期中考试的课堂表现相关。总体而言，更好的质量，更长的持续时间和更大的睡眠一致性与更好的成绩相关。但是，测试前一晚的睡眠量度与测试成绩之间没有关系。相反，测试前一个月和一周的睡眠时间和质量与更好的成绩相关。睡眠指标占学习成绩差异的近25％。这些发现提供了定量的客观证据，表明更高的质量，更长的持续时间和更大的睡眠一致性与大学更好的学习成绩密切相关。讨论了性别差异。