TRUST: An LLM-Based Dialogue System for Trauma Understanding and Structured Assessments

• URL: http://arxiv.org/abs/2504.21851v1
• Date: Wed, 30 Apr 2025 17:58:06 GMT
• Title: TRUST: An LLM-Based Dialogue System for Trauma Understanding and Structured Assessments
• Authors: Sichang Tu, Abigail Powers, Stephen Doogan, Jinho D. Choi,
• Abstract summary: This study aims to bridge the gap in mental healthcare accessibility by developing an LLM-powered dialogue system that replicates clinician behavior.<n>We introduce TRUST, a framework of cooperative LLM modules capable of conducting formal diagnostic interviews and assessments for PTSD.<n>We develop a patient simulation approach based on real-life interview transcripts to replace time-consuming and costly manual testing by clinicians.
• Score: 8.618945530676614
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Objectives: While Large Language Models (LLMs) have been widely used to assist clinicians and support patients, no existing work has explored dialogue systems for standard diagnostic interviews and assessments. This study aims to bridge the gap in mental healthcare accessibility by developing an LLM-powered dialogue system that replicates clinician behavior. Materials and Methods: We introduce TRUST, a framework of cooperative LLM modules capable of conducting formal diagnostic interviews and assessments for Post-Traumatic Stress Disorder (PTSD). To guide the generation of appropriate clinical responses, we propose a Dialogue Acts schema specifically designed for clinical interviews. Additionally, we develop a patient simulation approach based on real-life interview transcripts to replace time-consuming and costly manual testing by clinicians. Results: A comprehensive set of evaluation metrics is designed to assess the dialogue system from both the agent and patient simulation perspectives. Expert evaluations by conversation and clinical specialists show that TRUST performs comparably to real-life clinical interviews. Discussion: Our system performs at the level of average clinicians, with room for future enhancements in communication styles and response appropriateness. Conclusions: Our TRUST framework shows its potential to facilitate mental healthcare availability.

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