Sycophancy as Material Failure under Pushback Loading: A Multi-Axis Characterization Across Three Loading Cases and up to Seventeen Material Charges

arXiv:2606.16617v1 Announce Type: new Abstract: Sycophancy in LLMs is documented across 70+ papers, but expert agreement on construct boundaries remains low (ICC=.184; Ye et al., 2026). The construct fragments because behavioral classification depends on which surface form is privileged. We adopt a materials-science framing: conversation as test specimen under load, LLM-model as material charge, pushback as progressive load, stance-flip as material failure. We characterize this failure across three loading cases (debate n=1000; false-presuppositions n=3400; ethical-setting n=3400; 10-17 materi
The proliferation of Large Language Models (LLMs) and their integration into critical applications makes understanding their failure modes, like sycophancy, increasingly urgent.
Expert agreement on characterizing fundamental LLM behaviors remains low, hindering robust design and deployment, while this research introduces a novel, multi-faceted approach to this problem.
The adoption of a materials-science framing for analyzing LLM behavior provides a new rigorous methodology for understanding and potentially mitigating complex model failures like sycophancy.
- · AI researchers
- · LLM developers
- · AI safety engineers
- · LLM models with poor 'pushback' capabilities
- · Applications vulnerable to model sycophancy
Improved methodologies for evaluating and hardening LLMs against user manipulation and unwanted biases will emerge.
This rigorous characterization could lead to new architectural designs or training regimens specifically aimed at improving LLM robustness and truthfulness.
Enhanced trust and reliability in LLMs could accelerate their deployment into more sensitive and regulated sectors, provided these failure modes are adequately addressed.
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