Dissertation Information for Xiangming Mu
MPACT Status: Fully Complete
Title: Smartlinks in a video-based collaborative distance learning system: A cognitive model and evaluation study
Abstract: A novel Video-based Collaborative Distance Learning (VCDL) tool, the Interactive Shared Educational Environment (ISEE), was designed and developed. Multiple information channels including a video player, an interactive chat room, and a sharable web browser were integrated into a reconfigurable user interface and were linked together through "smartlinks"--a hyperlink mechanism to automatically synchronize between two independent information channels. A cognitive VCDL model was proposed based on cognitive load theory for learning. Three effects, the channel synchronization effect, the information flow-control effect, and the collaboration grounding effect, were suggested to minimize extraneous cognitive load in VCDL. An important component of the collaborative grounding effect is video grounding that insures that learners share the same video context while collaborating. A user study was conducted to test how smartlinks between the video player and the chat room affected video grounding. Fifty-nine subjects participated in the study and post-session questionnaire comments demonstrated that the efficacy of the design idea of the integration of a video player and a chat room for personal note taking and discussions. Smartlinks facilitated personal note taking by automatically recording the timestamps of each note. No statistically significant differences were found between using the smartlinks ISEE interface and the non-smartlinks ISEE interface in terms of cognitive load, learning performance, satisfaction, and user interaction.
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