Work

CrowS-Pairs-NL: A Benchmark to Evaluate Dutch Stereotype Bias in LLMs

Year: 2026
Type: conference-paper
Abstract: Warning: This paper contains explicit statements of offensive stereotypes.Bias benchmarks for LLMs largely focus on English, overlooking language-and culture-specific stereotypes.We introduce CrowS-Pairs-NL, a Dutch stereotype benchmark built by filtering, translating, and adapting the English CrowS-Pairs dataset to address known conceptual pitfalls, and extending it with newly crowdsourced Dutch sentence pairs.We evaluate six multilingual and Dutch-trained models using both a pseudo-log-likelihood metric adapted for autoregressive models and a prompt-based metric with three template variants.Models explicitly trained on Dutch data consistently exhibit higher stereotyping scores, suggesting that language-specific fine-tuning introduces language-specific bias.The two metrics broadly agree on model rankings but differ in sensitivity, with the prompt metric showing a narrower range of scores.Our benchmark and findings underscore the need for culturally grounded bias evaluation beyond English.
Institution: Utrecht University
Language: English
Subfield: Safety Research
Open Access status: gold
OpenAlex ID: W7166873917
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