AIBearisharXiv – CS AI · 9h ago7/10
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More Thinking, More Bias: Length-Driven Position Bias in Reasoning Models
Researchers discovered that reasoning-capable AI models like DeepSeek-R1 exhibit increasing position bias as their reasoning chains grow longer, contradicting assumptions that extended thinking reduces heuristic biases. The effect persists across multiple model sizes and datasets, suggesting that longer reasoning trajectories actually accumulate bias rather than eliminate it, with critical implications for multiple-choice question evaluation.
🧠 Llama