Impacts of Video Clarity on Learning Efficiency in Online Learning: the visual occlusion effect
Pages 201 - 206
Abstract
As a multi-dimensional pixel matrix, video has become primary instructional medium to promote learning. However, due to video compression, video quality is degraded in the online learning (OL) with medium-low transmission bandwidth. This paper is the first attempt to explore the impact of video clarity decline caused by video compression on learning efficiency in OL. In the experiment, 87 high school students were randomly assigned into one of three groups: high video clarity group, low video clarity group, and audio-only group. It is concluded that high video clarity is more advantageous for learning, and low video clarity is easy to cause a new effect, referred to as visual occlusion effect (VOE) which significantly affects the learning efficiency. Specifically, VOE shows impacts on the existed instructional effects in cognitive load theory and the learning principles in cognitive theory of multimedia learning and makes them weaken, disappear, reappear, severer, or even reverse. The findings suggest that VOE should be carefully considered when designing video content and using dual-channel instruction in OL.
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- Impacts of Video Clarity on Learning Efficiency in Online Learning: the visual occlusion effect
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Published In
July 2022
482 pages
ISBN:9781450396455
DOI:10.1145/3551708
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Association for Computing Machinery
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Published: 18 November 2022
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- Refereed limited
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- The Research project on Teacher Education of Shaanxi Normal University
- The Shaanxi Higher Education Teaching Reform Research Project
- The Project of Natural Science Basic Research in Shaanxi Province of China
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ICEMT 2022
ICEMT 2022: 2022 6th International Conference on Education and Multimedia Technology
July 13 - 15, 2022
Guangzhou, China
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