arXiv Open Access 2026

A Japanese Benchmark for Evaluating Social Bias in Reasoning Based on Attribution Theory

Taihei Shiotani Masahiro Kaneko Naoaki Okazaki
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Abstrak

In enhancing the fairness of Large Language Models (LLMs), evaluating social biases rooted in the cultural contexts of specific linguistic regions is essential. However, most existing Japanese benchmarks heavily rely on translating English data, which does not necessarily provide an evaluation suitable for Japanese culture. Furthermore, they only evaluate bias in the conclusion, failing to capture biases lurking in the reasoning. In this study, based on attribution theory in social psychology, we constructed a new dataset, ``JUBAKU-v2,'' which evaluates the bias in attributing behaviors to in-groups and out-groups within reasoning while fixing the conclusion. This dataset consists of 216 examples reflecting cultural biases specific to Japan. Experimental results verified that it can detect performance differences across models more sensitively than existing benchmarks.

Topik & Kata Kunci

Penulis (3)

T

Taihei Shiotani

M

Masahiro Kaneko

N

Naoaki Okazaki

Format Sitasi

Shiotani, T., Kaneko, M., Okazaki, N. (2026). A Japanese Benchmark for Evaluating Social Bias in Reasoning Based on Attribution Theory. https://arxiv.org/abs/2604.00568

Akses Cepat

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Informasi Jurnal
Tahun Terbit
2026
Bahasa
en
Sumber Database
arXiv
Akses
Open Access ✓