Self-Correction Bench: Revealing and Addressing the Self-Correction
  Blind Spot in LLMs
Authors: name: Ken Tsui
Published: 2025-07-03 16:41:30

Abstract: Although large language models (LLMs) have become transformative, they still
make mistakes and can explore unproductive reasoning paths. Self-correction is
an important capability for a trustworthy LLM, particularly an autoregressive
LLM. While LLMs can identify error in user input, they exhibit a systematic
'Self-Correction Blind Spot' - failing to correct identical error in their own
outputs. To systematically study this phenomenon, we introduce Self-Correction
Bench, a systematic framework to measure this phenomenon through controlled
error injection at three complexity levels. Testing 14 models, we find an
average 64.5% blind spot rate. We find multiple evidences that this limitation
relates to training data composition: human training demonstrations
predominantly show error-free responses rather than error-correction sequences,
unlike RL-trained models that learn error correction through outcome feedback.
Remarkably, simply appending "Wait" reduces blind spots by 89.3%, suggesting
that the capability exists but requires activation. Our work highlights a
critical limitation in current LLMs and offers potential avenues for improving
their reliability and trustworthiness.