Early morning university classes are associated with impaired sleep and academic performance

Early morning university classes are associated with impaired sleep and academic performance. Attending classes and sleeping well are important for students' academic success. Here, we tested whether early morning classes are associated with lower attendance, shorter sleep and poorer academic achievement by analysing university students' digital traces. Wi-Fi connection logs in 23,391 students revealed that lecture attendance was about ten percentage points lower for classes at 08:00 compared with later start times. Diurnal patterns of Learning Management System logins in 39,458 students and actigraphy data in 181 students demonstrated that nocturnal sleep was an hour shorter for early classes because students woke up earlier than usual. Analyses of grades in 33,818 students showed that the number of days per week they had morning classes was negatively correlated with grade point average. These findings suggest concerning associations between early morning classes and learning outcomes.

这是一张《Nature Human Behaviour》期刊文章的截图，展示了一项关于大学早课对学生睡眠和学业表现影响的研究。文章标题为"Early morning university classes are associated with impaired sleep and academic performance"，主要探讨了早晨上课与睡眠质量下降及学业成绩受损之间的关联。研究通过分析学生的Wi-Fi连接日志、学习管理系统登录数据和睡眠监测数据，发现早上8点上课的学生出勤率明显降低，睡眠时长缩短约一小时，且每周早课天数与平均绩点呈负相关。

图片内容显示的是《Nature Human Behaviour》期刊网站上发表的一篇学术文章截图。该文章于2021年6月15日收到投稿，2023年1月17日被接受，2023年2月20日在线发表，DOI为https://doi.org/10.1038/s41562-023-01531-x。截图包含了期刊名称、文章标题、作者列表、发表日期和文章摘要的开头部分。