Analysing Differences in Persuasive Language in LLM-Generated Text: Uncovering Stereotypical Gender Patterns

Amalie Brogaard Pauli, Maria Barrett, Max M\"uller-Eberstein, Isabelle Augenstein, Ira Assent


Abstract
Large language models (LLMs) are increasingly used for everyday communication tasks, including drafting interpersonal messages intended to influence and persuade. Prior work has shown that LLMs can successfully persuade humans and amplify persuasive language. It is therefore essential to understand how user instructions affect the generation of persuasive language, and to understand whether the generated persuasive language differs, for example, when targeting different groups. In this work, we propose a framework for evaluating how persuasive language generation is affected by recipient gender, sender intent, or output language. We evaluate 13 LLMs and 16 languages using pairwise prompt instructions. We evaluate model responses on 19 categories of persuasive language using an LLM-as-judge setup grounded in social psychology and communication science. Our results reveal significant gender differences in the persuasive language generated across all models. These patterns reflect biases consistent with gender-stereotypical linguistic tendencies documented in social psychology and sociolinguistics.
Anthology ID:
2026.findings-acl.1742
Volume:
Findings of the Association for Computational Linguistics: ACL 2026
Month:
July
Year:
2026
Address:
San Diego, California, United States
Editors:
Maria Liakata, Viviane P. Moreira, Jiajun Zhang, David Jurgens
Venue:
Findings
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Publisher:
Association for Computational Linguistics
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Pages:
34893–34918
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URL:
https://preview.aclanthology.org/ingest-acl/2026.findings-acl.1742/
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Cite (ACL):
Amalie Brogaard Pauli, Maria Barrett, Max M\"uller-Eberstein, Isabelle Augenstein, and Ira Assent. 2026. Analysing Differences in Persuasive Language in LLM-Generated Text: Uncovering Stereotypical Gender Patterns. In Findings of the Association for Computational Linguistics: ACL 2026, pages 34893–34918, San Diego, California, United States. Association for Computational Linguistics.
Cite (Informal):
Analysing Differences in Persuasive Language in LLM-Generated Text: Uncovering Stereotypical Gender Patterns (Pauli et al., Findings 2026)
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https://preview.aclanthology.org/ingest-acl/2026.findings-acl.1742.pdf
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