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arXiv · 2509.17999

The Narcissus Hypothesis: Descending to the Rung of Illusion

Riccardo Cadei·Christian Internò
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Abstract

Modern foundational models increasingly reflect not just world knowledge, but patterns of human preference embedded in their training data. We hypothesize that recursive alignment-via human feedback and model-generated corpora-induces a social desirability bias, nudging models to favor agreeable or flattering responses over objective reasoning. We refer to it as the Narcissus Hypothesis and test it across 31 models using standardized personality assessments and a novel Social Desirability Bias score. Results reveal a significant drift toward socially conforming traits, with profound implications for corpus integrity and the reliability of downstream inferences. We then offer a novel epistemological interpretation, tracing how recursive bias may collapse higher-order reasoning down Pearl's Ladder of Causality, culminating in what we refer to as the Rung of Illusion.

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Riccardo Cadei, Christian Internò. 2025-10-21. The Narcissus Hypothesis: Descending to the Rung of Illusion. https://arxiv.org/abs/2509.17999

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