A Computational Framework for Behavioral Assessment of LLM Therapists

• URL: http://arxiv.org/abs/2401.00820v1
• Date: Mon, 1 Jan 2024 17:32:28 GMT
• Title: A Computational Framework for Behavioral Assessment of LLM Therapists
• Authors: Yu Ying Chiu, Ashish Sharma, Inna Wanyin Lin, Tim Althoff
• Abstract summary: ChatGPT and other large language models (LLMs) have greatly increased interest in utilizing LLMs as therapists. We propose BOLT, a novel computational framework to study the conversational behavior of LLMs when employed as therapists. We compare the behavior of LLM therapists against that of high- and low-quality human therapy, and study how their behavior can be modulated to better reflect behaviors observed in high-quality therapy.
• Score: 8.373981505033864
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The emergence of ChatGPT and other large language models (LLMs) has greatly increased interest in utilizing LLMs as therapists to support individuals struggling with mental health challenges. However, due to the lack of systematic studies, our understanding of how LLM therapists behave, i.e., ways in which they respond to clients, is significantly limited. Understanding their behavior across a wide range of clients and situations is crucial to accurately assess their capabilities and limitations in the high-risk setting of mental health, where undesirable behaviors can lead to severe consequences. In this paper, we propose BOLT, a novel computational framework to study the conversational behavior of LLMs when employed as therapists. We develop an in-context learning method to quantitatively measure the behavior of LLMs based on 13 different psychotherapy techniques including reflections, questions, solutions, normalizing, and psychoeducation. Subsequently, we compare the behavior of LLM therapists against that of high- and low-quality human therapy, and study how their behavior can be modulated to better reflect behaviors observed in high-quality therapy. Our analysis of GPT and Llama-variants reveals that these LLMs often resemble behaviors more commonly exhibited in low-quality therapy rather than high-quality therapy, such as offering a higher degree of problem-solving advice when clients share emotions, which is against typical recommendations. At the same time, unlike low-quality therapy, LLMs reflect significantly more upon clients' needs and strengths. Our analysis framework suggests that despite the ability of LLMs to generate anecdotal examples that appear similar to human therapists, LLM therapists are currently not fully consistent with high-quality care, and thus require additional research to ensure quality care.

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