Exploring human-SAV interaction using LLMs: The impact of psychological factors on user experience

• URL: http://arxiv.org/abs/2504.16548v2
• Date: Fri, 10 Oct 2025 01:55:08 GMT
• Title: Exploring human-SAV interaction using LLMs: The impact of psychological factors on user experience
• Authors: Lirui Guo, Michael G. Burke, Wynita M. Griggs,
• Abstract summary: We investigate how prompt strategies in large language models (LLM)-powered conversational SAV agents affect users' perceptions, experiences, and intentions to adopt technology.<n>We designed four SAV agents with varying levels of anthropomorphic characteristics and psychological ownership triggers.<n>Results indicate that an SAV designed to be more anthropomorphic and to induce psychological ownership improved users' perceptions of the SAV's human-like qualities.
• Score: 1.0195618602298684
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: There has been extensive prior work exploring how psychological factors such as anthropomorphism affect the adoption of Shared Autonomous Vehicles (SAVs). However, limited research has been conducted on how prompt strategies in large language models (LLM)-powered conversational SAV agents affect users' perceptions, experiences, and intentions to adopt such technology. In this work, we investigate how conversational SAV agents powered by LLMs drive these psychological factors, such as psychological ownership, the sense of possession a user may come to feel towards an entity or object they may not legally own. We designed four SAV agents with varying levels of anthropomorphic characteristics and psychological ownership triggers. Quantitative measures of psychological ownership, anthropomorphism, quality of service, disclosure tendency, sentiment of SAV responses, and overall acceptance were collected after participants interacted with each SAV. Qualitative feedback was also gathered regarding the experience of psychological ownership during the interactions. The results indicate that an SAV designed to be more anthropomorphic and to induce psychological ownership improved users' perceptions of the SAV's human-like qualities, and its responses were perceived as more positive but also more subjective compared to the control conditions. Qualitative findings support established routes to psychological ownership in the SAV context and suggest that the conversational agent's perceived performance may also influence psychological ownership. Both quantitative and qualitative outcomes highlight the importance of personalization in designing effective SAV interactions. These findings provide practical guidance for designing conversational SAV agents that enhance user experience and adoption.

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