In plain words: Tested whether writing habits more common in women — hedges, tag questions, collective "we" — change AI replies across three document types and four models. Such prompts drew shorter, simpler, less formal answers, while gendered sign-off names had no effect.
Abstract
Professional communication is increasingly mediated by LLMs - but do these models serve all users equally? We show that when prompts contain linguistic features more commonly used by women (hedges, tag questions, collective reference), they systematically elicit shorter, less sophisticated, and less formal responses across three document types and four models. These effects persist after controlling for prompt complexity and feature carry-over. Explicit gender cues like sign-off names are encoded in the same representational space as linguistic dialect - suggesting shared underlying mechanisms - yet linguistic register is far more influential, producing large, consistent effects where names produce none. Our results further reveal that post-hoc mitigation is challenging: because these patterns are culturally embedded and outside conscious control, users cannot easily avoid them through strategic self-presentation, and mechanistic analysis reveals that linguistic features are encoded in early transformer layers and entangled with other features. Our work calls for upstream consideration of the influences of linguistic variation to mitigate disparate impacts of LLM-mediated workplace communication.
Katherine Van Koevering, Anjalie Field
arXiv:2608.13328 · cs.CL, cs.AI · submitted Aug 13, 2026
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> Through the perturbation of patient messages, we evaluate whether LLM behavior remains consistent, accurate, and unbiased when non-clinical information is altered. […] Our findings reveal notable inconsistencies in LLM treatment recommendations and significant degradation of clinical accuracy in ways that reduce care allocation to patients. […] Our perturbations reflect realistic patient messages from electronic formatting errors and/or simulate patient groups that would be impacted by a wide adoption of patient-AI systems (female patients, non-binary patients or those who use gender-neutral pronouns, patients with health anxiety, patients with a more dramatic disposition, patients with less technological aptitude, and patients with limited English proficiency, etc.)
We’re all peering down the kaleidoscope of a trillion parameter model. It’s no surprise gentle nudges in inputs (grammar, language proficiency, cultural norms) yield different outcomes, despite the intent not changing. It’s one thing to generate crap code, it’s another to generate crap medical advice.
[0] https://dl.acm.org/doi/10.1145/3715275.3732121