ArticleProceedings of the ... ACM International Conference on Intelligent Virtual Agents. IVA (Conference)2023
The Impact of Virtual Human Vocal Personality on Establishing Rapport: A Study on Promoting Mental Wellness Through Extroversion and Vocalics.
Article in Proceedings of the ... ACM International Conference on Intelligent Virtual Agents. IVA (Conference), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Virtual humans are employed in various contexts, including mental health interventions, to encourage users to adopt healthy behaviors. Establishing rapport with users can enhance the effectiveness of these virtual agents. One way to build rapport is by matching the personality between the virtual human and the participant, which may elicit a similarity-attraction effect, shown to increase trust and likeability in interactions. Despite the potential of computer-generated voices to convey personality through the manipulation of vocalic properties, prior research has primarily focused on non-vocal aspects of personality. To address this gap, we conducted an online study that altered a virtual human's vocalic properties to represent high or low extroversion, with a focus on the role of rapport in promoting mental wellness. In this study, a virtual human provided information on stress-reducing mental-wellness practices to 165 participants. Our findings suggest that synthesizing vocalic properties to resemble a low extroversion level can enhance the persuasiveness of virtual humans and improve rapport, as indicated by participants' self-reported intention to engage in mental-wellness practices.
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