Distance Learning in Higher Education: Evidence from a Randomized Experiment
通过瑞士一所公立大学的随机实验，研究了在线直播讲座对学生成绩和出勤率的影响，发现直播对低能力学生成绩有负面影响，对高能力学生有正面影响，且直播仅偶尔被使用，对课堂出勤率影响不大。
Abstract Using a randomized experiment in a public Swiss university, we study the impact of online live streaming of lectures on student achievement and attendance. We find that (i) attending lectures via live streaming lowers achievement for low-ability students and increases achievement for high-ability ones; (ii) students use the live streaming technology only occasionally, apparently when random events make attending in class too costly, and (iii) offering live streaming reduces in-class attendance only mildly. These findings have important implications for the effective design of education policies.