教学视频播放速度与难易程度对学习的影响研究  

Research on the Influence of Instructional Video Playback Speed and Task Difficulty on Learning

作　　者：冯小燕[1,2] 王方圆 赵甜英 李幸原 王敏 李国厚 Feng Xiaoyan;Wang Fangyuan;Zhao Tianying;Li Xingyuan;Wang Min;Li Guohou(College of Information Engineering,Henan Institute of Science and Technology,Xinxiang Henan 453000;Faculty of Education,Henan University,Kaifeng Henan 475004)

机构地区：[1]河南科技学院信息工程学院,河南新乡453000 [2]河南大学教育学部,河南开封475004

出　　处：《远程教育杂志》2021年第6期76-84,共9页Journal of Distance Education

基　　金：国家自然科学基金项目“移动学习环境下学习投入的动态变化机制与资源支持研究”(课题编号:61907013);教育部人文社会科学研究青年基金项目“学习投入视角下移动学习资源优化设计的实证研究”(课题编号:18YJC880015);河南省哲学社会科学规划项目“移动互联网环境下大学生学习投入对学习收获的影响及干预研究”(课题编号:2019BJY009)的阶段性研究成果。

摘　　要：当前,倍速观看视频的学习方式已非常流行,但其对学习的影响机制尚不清楚。基于现有研究,在提出“视频播放速度和内容难易程度对学习影响的作用机制模型”基础上,采用实验研究的方法,将114名被试分为4组,分别学习“1.0倍速—易”“1.5倍速—易”“1.0倍速—难”“1.5倍速—难”的教学视频,从而探究视频播放速度和内容难易程度对学习的影响。研究发现:当内容较容易时,1.5倍速在保证学习效果的同时,有利于提高学习效率,但对学习动机和积极情绪有消极影响;当内容较难时,1.5倍速会显著降低放松度和保持测试成绩;在播放速度相同的情况下,当内容较难时,学习者的学习动机低,认知负荷高,学习效果不理想。可见,视频播放速度对学习者的影响在一定程度上受内容难易程度的调节。据此,从教学视频设计和视频学习两个方面提出了改进建议,以优化教学视频设计,提升学习效果。Watching instructional videos at high playback speed is becoming more and more popular,but the mechanism of its effect on learning is still unclear.Based on the mechanism model of the impact of video playback speed and task difficulty on learning,in this study,we used two-factors completely randomized experiment.114 subjects were divided into 4 groups and studied the instructional videos with“1.0x speed-easy”“1.5x speed-easy”“1.0x speed-hard”“1.5x speed-hard”.Their learning motivation,emotional experience,cognitive load,cognitive process and learning effect were tested to explore the influence of the playback speed and task difficulty of instructional video on the learning process and the learning results.The results show that when the learning task is easy,1.5x speed can improve the learning efficiency under the condition of ensuring the learning effect,but it has negative impact on the learning motivation and the positive emotion.When the learning task is difficult,1.5x speed will significantly reduce learners’relaxation and maintain test scores.At the same playback speed condition,if the learning task is difficult,learners will have low learning motivations,high cognitive loads,and unsatisfactory learning effects.The influence of the video playback speed on learners is regulated by the task difficulty to some extent.Suggestions are made for instructional video designers and learners in order to optimize the design of the instructional video and improve the learning effect.

关 键 词：教学视频 播放速度 难易程度 学习动机 情绪体验 认知负荷 

分 类 号：G420[文化科学—课程与教学论]