SIGNALAI·May 28, 2026, 4:00 AMSignal75Short term

Trust Me, I'm an Expert: Decoding and Steering Authority Bias in Large Language Models

Source: arXiv cs.LG

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Trust Me, I'm an Expert: Decoding and Steering Authority Bias in Large Language Models

arXiv:2601.13433v3 Announce Type: replace-cross Abstract: Prior research demonstrates that performance of language models on reasoning tasks can be influenced by suggestions, hints and endorsements. However, the influence of endorsement source credibility remains underexplored. We investigate whether language models exhibit systematic bias based on the perceived expertise of the provider of the endorsement. Across 4 datasets spanning mathematical, legal, and medical reasoning, we evaluate 11 models using personas representing four expertise levels per domain. Our results reveal that models are

Why this matters
Why now

The rapid advancement and deployment of large language models make understanding and mitigating their inherent biases, such as authority bias, crucial for reliable integration into critical applications.

Why it’s important

Understanding how LLMs are influenced by perceived expertise provides critical insights into their decision-making processes, directly impacting their trustworthiness and potential for manipulation across sensitive domains.

What changes

We now have clearer empirical evidence that LLMs exhibit systematic biases based on the source of endorsement, suggesting a need for more robust training and ethical guidelines to counteract such influences.

Winners
  • · AI ethics researchers
  • · Organizations developing responsible AI
  • · End-users of robust, unbiased AI systems
Losers
  • · Developers ignoring bias mitigation
  • · AI systems prone to subtle manipulation
  • · Applications requiring absolute neutrality
Second-order effects
Direct

More sophisticated methods for auditing and debiasing LLMs will be developed and implemented across various industries.

Second

Public and regulatory scrutiny on AI transparency and bias mitigation will intensify, potentially leading to new compliance standards.

Third

The development of 'expert-agnostic' or 'trust-resistant' AI architectures could emerge as a new research frontier, fundamentally altering how LLMs process information.

Editorial confidence: 90 / 100 · Structural impact: 60 / 100
Original report

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Read at arXiv cs.LG
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