Abstract
Discussion fora of instructional videos contain previously-discussed questions and answers. These video comments can resolve many points of confusion for learners. However, finding relevant content in a separated discussion forum is challenging and disruptive to learning flow. This paper introduces Adjacent Display of Relevant Discussion (ADRD): it displays threaded comments in a panel adjacent to the video and dynamically updates the content of the panel based on the time of the video. In a between-subjects lab study (n=20), ADRD helped participants resolve confusion points, skim and read comments, and encouraged video interaction.
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