Understanding the Role of Mental Models in User Interaction with an Adaptive Dialog Agent

Lindsey Morgan Vanderlyn, Dirk Väth, Thang Vu


Abstract
Mental models play an important role in whether user interactions with intelligent systems, such as dialog agents, are successful. Adaptive dialog systems present the opportunity to align a dialog agent’s behavior with heterogeneous user expectations. However, there has been little research into what mental models users form when interacting with a task-oriented dialog system, how these models affect users’ interactions, or what role system adaptation can play in this process. This can make it challenging to avoid damage to human-AI partnership. In this work, we collect a new publicly available dataset for exploring user mental models of information seeking dialog systems. We demonstrate that users have a variety of conflicting mental models about such systems, the validity of which directly impacts the success and perception of their interactions. Furthermore, we show that adapting a dialog agent’s behavior to better align with users’ mental models, even when done implicitly, can improve dialog efficiency, success, and user perception of the interaction. This shows that implicit adaptation can be beneficial for task-oriented dialog systems, so long as developers understand the mental models of their users.
Anthology ID:
2025.findings-naacl.56
Volume:
Findings of the Association for Computational Linguistics: NAACL 2025
Month:
April
Year:
2025
Address:
Albuquerque, New Mexico
Editors:
Luis Chiruzzo, Alan Ritter, Lu Wang
Venue:
Findings
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
989–1015
Language:
URL:
https://preview.aclanthology.org/fix-sig-urls/2025.findings-naacl.56/
DOI:
Bibkey:
Cite (ACL):
Lindsey Morgan Vanderlyn, Dirk Väth, and Thang Vu. 2025. Understanding the Role of Mental Models in User Interaction with an Adaptive Dialog Agent. In Findings of the Association for Computational Linguistics: NAACL 2025, pages 989–1015, Albuquerque, New Mexico. Association for Computational Linguistics.
Cite (Informal):
Understanding the Role of Mental Models in User Interaction with an Adaptive Dialog Agent (Vanderlyn et al., Findings 2025)
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PDF:
https://preview.aclanthology.org/fix-sig-urls/2025.findings-naacl.56.pdf