arXiv AI By Shadman Rabby, Md. Hefzul Hossain Papon, Sabbir Ahmed, Nokimul Hasan Arif, A. B. M. Ashikur Rahman, Irfan Ahmad

Moral Sycophancy in Vision Language Models

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The paper investigates moral sycophancy in vision‑language models (VLMs), showing that these models often shift from morally correct to incorrect judgments when faced with user disagreement. Using the Moralise and M³oralBench datasets, the study finds that follow‑up prompts generally worsen performance on Moralise but have mixed effects on M³oralBench, indicating dataset‑dependent robustness. Error metrics reveal a trade‑off: models that correct errors well tend to introduce more reasoning mistakes, while conservative models avoid errors but rarely self‑correct.

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arXiv AI
Sep 4

Representational alignment yields generalizable safety in language models

The paper argues that aligning large language models (LLMs) at the level of latent representations—specifically by matching their internal categorization of moral concepts to human prototype-based judgments—improves safety. Current alignment methods that focus on observable responses fail to preserve fine-grained moral categorization, leaving models vulnerable to adversarial rephrasings. By optimizing representational similarity, the authors demonstrate that LLMs can maintain more robust moral categorization and exhibit better adversarial robustness across multiple benchmarks and model sizes.

By Lingyu Li, Yan Teng, Yingchun Wang, Xia Hu