Large Language Models for Mental Health: A Multilingual Evaluation
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866914301755785216 |
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| author | Raihan, Nishat Puspo, Sadiya Sayara Chowdhury Bucur, Ana-Maria Chancellor, Stevie Zampieri, Marcos |
| author_facet | Raihan, Nishat Puspo, Sadiya Sayara Chowdhury Bucur, Ana-Maria Chancellor, Stevie Zampieri, Marcos |
| contents | Large Language Models (LLMs) have remarkable capabilities across NLP tasks. However, their performance in multilingual contexts, especially within the mental health domain, has not been thoroughly explored. In this paper, we evaluate proprietary and open-source LLMs on eight mental health datasets in various languages, as well as their machine-translated (MT) counterparts. We compare LLM performance in zero-shot, few-shot, and fine-tuned settings against conventional NLP baselines that do not employ LLMs. In addition, we assess translation quality across language families and typologies to understand its influence on LLM performance. Proprietary LLMs and fine-tuned open-source LLMs achieve competitive F1 scores on several datasets, often surpassing state-of-the-art results. However, performance on MT data is generally lower, and the extent of this decline varies by language and typology. This variation highlights both the strengths of LLMs in handling mental health tasks in languages other than English and their limitations when translation quality introduces structural or lexical mismatches. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2602_02440 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Large Language Models for Mental Health: A Multilingual Evaluation Raihan, Nishat Puspo, Sadiya Sayara Chowdhury Bucur, Ana-Maria Chancellor, Stevie Zampieri, Marcos Computation and Language Large Language Models (LLMs) have remarkable capabilities across NLP tasks. However, their performance in multilingual contexts, especially within the mental health domain, has not been thoroughly explored. In this paper, we evaluate proprietary and open-source LLMs on eight mental health datasets in various languages, as well as their machine-translated (MT) counterparts. We compare LLM performance in zero-shot, few-shot, and fine-tuned settings against conventional NLP baselines that do not employ LLMs. In addition, we assess translation quality across language families and typologies to understand its influence on LLM performance. Proprietary LLMs and fine-tuned open-source LLMs achieve competitive F1 scores on several datasets, often surpassing state-of-the-art results. However, performance on MT data is generally lower, and the extent of this decline varies by language and typology. This variation highlights both the strengths of LLMs in handling mental health tasks in languages other than English and their limitations when translation quality introduces structural or lexical mismatches. |
| title | Large Language Models for Mental Health: A Multilingual Evaluation |
| topic | Computation and Language |
| url | https://arxiv.org/abs/2602.02440 |