This work was funded by National Natural Science Foundation of China, “Knowledge fusion key technical research based on Web information” (61272205) and Key technologies research and demonstration of precise education supported by Internet (2017ACA105). We would like to thank all the anonymous reviewers for their insightful comments to improve the paper.
机构署名：
本校为第一且通讯机构
院系归属：
教育信息技术学院
摘要：
This study investigated whether video lectures instructed by a heightened level of expressiveness instructor were better than those instructed by a conventional level of expressiveness instructor or audio-only in promoting students' online learning, and what kind of effects do instructor's facial expressions have on students' learning. Three different types of video lectures (one with a heightened level of expressiveness instructor, one with a conventional level of expressiveness instructor and one with the instructor' audio only) were used to ...
