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arXiv · 2605.05957

Knowing but Not Correcting: Routine Task Requests Suppress Factual Correction in LLMs

Zixuan Chen·Hao Lin·Zizhe Chen·Yizhou Tian·Garry Yang·Depeng Wang·Ya Guo·Huijia Zhu·James Cheng
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Abstract

LLMs reliably correct false claims when presented in isolation, yet when the same claims are embedded in task-oriented requests, they often comply rather than correct. We term this failure mode \emph{correction suppression} and construct a benchmark of 300 false premises to systematically evaluate it across eight models. Suppression rates range from 19\% to 90\%, with four models exceeding 80\%, establishing correction suppression as a prevalent and severe phenomenon. Mechanistic analysis reveals that suppression is not a knowledge failure: the model registers the error internally but task context diverts early-layer attention from the false claim as output intent crystallizes toward compliance at middle layers. We characterize this as \emph{knowing but not correcting} -- suppression occurs at response selection rather than knowledge encoding. Guided by this mechanism, we propose two training-free interventions. Correction Direction Steering (CDS) estimates a correction-compliance direction from matched pairs and injects it at middle layers before output intent crystallizes. Dynamic Payload Amplification (DPA) localizes payload tokens via attention divergence between early and late layers and amplifies their representation at the final layer, requiring no calibration data. Experiments on Qwen3.5-9B and LLaMA3.1-8B show both methods substantially improve factual strictness. CDS achieves the highest correction rate on Qwen3.5-9B (0\%$\to$58.2\%). DPA is the only method that preserves or improves reasoning capability on both models. These findings introduce \emph{factual strictness} -- the willingness to uphold accuracy against contextual pressures -- as a new dimension of model reliability.

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Zixuan Chen, Hao Lin, Zizhe Chen, Yizhou Tian, Garry Yang, Depeng Wang, Ya Guo, Huijia Zhu, James Cheng. 2026-05-08. Knowing but Not Correcting: Routine Task Requests Suppress Factual Correction in LLMs. https://arxiv.org/abs/2605.05957

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