| MOOC视频播放速度对认知加工影响的实验研究 |
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| 引用本文： | 冯小燕,张丽莉,张梦思,白瑞娟.MOOC视频播放速度对认知加工影响的实验研究[J].现代教育技术,2020(2):50-56. |
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| 作者姓名： | 冯小燕 张丽莉 张梦思 白瑞娟 |
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| 作者单位： | ;1.河南科技学院信息工程学院 |
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| 基金项目： | 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”(项目编号：18YJC880015)的阶段性研究成果;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”(项目编号：61907013);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”(项目编号：2019BJY009)资助 |
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| 摘 要： | 文章采用实验研究法,以1.0、1.25和1.5倍速播放有字幕和无字幕的MOOC视频,分析视频播放速度对学习者认知加工情况的影响,结果发现:MOOC视频播放速度调整导致画面信息量、解说语速和内容节奏的变化,进而影响学习者的认知加工过程。适当加快播放速度有利于学习者的认知加工,但速度过快则会对学习者的认知加工起到负面影响,而1.25倍速是较为理想的MOOC视频播放速度。播放速度加快时,字幕可以辅助学习者进行认知加工,降低认知负荷。有字幕时,学习者可接受的速度范围较大,1.0、1.25和1.5倍速的学习效果无显著差异;无字幕时,学习者可接受的速度范围较小,1.5倍速的学习效果显著低于1.0、1.25倍速。期望文章的研究及结论对优化MOOC视频设计有一定的参考价值。
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| 关 键 词： | MOOC视频 播放速度 字幕 认知加工 学习效果 |
Experimental Research on the Effect of MOOC Video Playback Speed on Cognitive Processing |
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| FENG Xiao-yan,ZHANG Li-li,ZHANG Meng-si,BAI Rui-juan.Experimental Research on the Effect of MOOC Video Playback Speed on Cognitive Processing[J].Modern Educational Technology,2020(2):50-56. |
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| Authors: | FENG Xiao-yan ZHANG Li-li ZHANG Meng-si BAI Rui-juan |
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| Institution: | (School of Information Engineering,Henan Institute of Science and Technology,Xinxiang,Henan,China 453000) |
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| Abstract: | In this paper,the impact of video playback speed on learners’cognitive processing was analyzed with playing subtitled and unsubtitled massive open online course(MOOC)videos at 1.0x,1.25x and 1.5x speeds through experimental research methods.Results showed that the adjustment of MOOC playback speed caused the changes of video information,narration speed and content rhythm,which in turn affected learners’cognitive process.Appropriate improvement of video playback speed was beneficial to learners’cognition,while excessive speed could hinder learners’cognition processing.It was found that the 1.25x speed was the ideal MOOC video playback speed.When the palyback speed was accelerated,subtitles could assist learners in cognitive processing and reduce congnitive load.For subtitled MOOC videos,the range of acceptable speeds for learners was wide,and there was no significant difference in learning effect at 1.0x,1.25x and 1.5x speeds.For unsubtitled MOOC videos,the range of acceptable speeds for learners was small,and the learning effect at 1.5x speed was significantly lower than these at 1.0x and 1.25x speeds.The results of this paper could offer certain reference to the optimization of MOOC videos design. |
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| Keywords: | MOOC videos playback speed subtitle cognitive process learning effects |
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