Talking to a pedagogical agent in a smart TV: modality matching effect in human-TV interaction

Young June Sah

Behaviour and Information Technology, 2021, vol. 40, issue 3, 240-250

Abstract: The current study examined how voice control and a virtual agent in a smart TV interplay in influencing users’ evaluation of the TV. In a 2 (input modality: voice control vs. remote controller) X 2(agent type: realistic vs. cartoonlike agent) between-subjects experiment, participants (N = 64) used and evaluated a smart TV in an educational context. Results revealed negative effects of voice control, especially when it accompanied a cartoonlike agent. Those who used the voice control to the cartoonlike agent rated the agentless humanlike, attractive, intelligent and intimate than did those who used the remote controller to the cartoonlike agent. Also, those who used voice control reported that watching the TV was less involving and enjoyable than those who used the remote controller. The negative effects were mitigated, however, when they interacted with a realistic agent. These results suggest the importance of the matching between input modality and visual interface to reduce potential negative effects.

Date: 2021
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DOI: 10.1080/0144929X.2019.1685003

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