Can You Share Your Story? Modeling Clients’ Metacognition and Openness for LLM Therapist Evaluation

Minju Kim, Dongje Yoo, Yeonjun Hwang, Minseok Kang, Namyoung Kim, Minju Gwak, Beong-woo Kwak, Hyungjoo Chae, Harim Kim, Yunjoong Lee, Min Hee Kim, Dayi Jung, Kyong-Mee Chung, Jinyoung Yeo


Abstract
Understanding clients’ thoughts and beliefs is fundamental in counseling, yet current evaluations of LLM therapists often fail to assess this ability. Existing evaluation methods rely on client simulators that clearly disclose internal states to the therapist, making it difficult to determine whether an LLM therapist can uncover unexpressed perspectives. To address this limitation, we introduce MindVoyager, a novel evaluation framework featuring a controllable and realistic client simulator which dynamically adapts itself based on the ongoing counseling session, offering a more realistic and challenging evaluation environment. We further introduce evaluation metrics that assess the exploration ability of LLM therapists by measuring their thorough understanding of client’s beliefs and thoughts.
Anthology ID:
2025.findings-acl.1332
Volume:
Findings of the Association for Computational Linguistics: ACL 2025
Month:
July
Year:
2025
Address:
Vienna, Austria
Editors:
Wanxiang Che, Joyce Nabende, Ekaterina Shutova, Mohammad Taher Pilehvar
Venues:
Findings | WS
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Publisher:
Association for Computational Linguistics
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Pages:
25943–25962
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URL:
https://preview.aclanthology.org/ingestion-acl-25/2025.findings-acl.1332/
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Cite (ACL):
Minju Kim, Dongje Yoo, Yeonjun Hwang, Minseok Kang, Namyoung Kim, Minju Gwak, Beong-woo Kwak, Hyungjoo Chae, Harim Kim, Yunjoong Lee, Min Hee Kim, Dayi Jung, Kyong-Mee Chung, and Jinyoung Yeo. 2025. Can You Share Your Story? Modeling Clients’ Metacognition and Openness for LLM Therapist Evaluation. In Findings of the Association for Computational Linguistics: ACL 2025, pages 25943–25962, Vienna, Austria. Association for Computational Linguistics.
Cite (Informal):
Can You Share Your Story? Modeling Clients’ Metacognition and Openness for LLM Therapist Evaluation (Kim et al., Findings 2025)
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https://preview.aclanthology.org/ingestion-acl-25/2025.findings-acl.1332.pdf