教学视频中教师呈现方式对学习者社会存在感和学习效果的影响

The Effect of Instructors' Presentation Types on Students' Social Presence and Learning Outcome in the Teaching Video

教师形象如何呈现一直是教学视频设计者必须面对的问题。为此,文章设置了四组教师呈现方式(包括无教师呈现、教师呈现比例大、教师呈现比例中等、教师呈现比例小),并进行了教学视频的对比实验。通过社会存在感的因子分析,文章提出可通过投入度、互动性、亲切感、沉浸感、直观感等五个维度进行社会存在感的测量。通过方差分析,文章得出结论:教学视频中教师的呈现方式对学习者的社会存在感和学习效果有显著影响——有教师呈现比无教师呈现的社会存在感要低,教师呈现比例中等比教师呈现比例大、教师呈现比例小的社会存在感要低;有教师呈现比无教师呈现的学习效果要好。研究教学视频中教师呈现方式对学习者社会存在感和学习效果的影响,可为教学视频中教师呈现提供设计策略,并促进教学效果的最大化。

How to present teachers＇ image has been the problem that teaching video designers must face. This paper set up four instructors＇ presentation types （without instructors＇ image, with large, medium or small proportion of instructors＇ image appearing in the teaching video） and further conducted comparison experiment. By factor analysis, it was proposed that the social presence should be measured from the five dimensions of engagement, interaction, intimacy, immersion and intuition. Meanwhile, by analysis of variance, it was found that the instructors＇ presentation types had a significant effect on the students＇ social presence and learning outcome. The social presence obtained in the teaching video with instructor＇s image was lower than that in the teaching video without instructor＇s image. The teaching video with medium proportion of instructors＇ image was conductive to acquiring lower social presence, as compared to that with large or small proportion of instructors＇ image. In addition, the obtained learning outcome in teaching video with instructor＇s image was higher than that in the teaching video without instructors＇ image. These results could provide strategy for designing the instructor presentation in teaching video and promote the maximization of the teaching effect.