Emergent LLM behaviors are observationally equivalent to data leakage

Fuente: arXiv
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Main Authors: Barrie, Christopher, Törnberg, Petter
Format: Preprint
Published: 2025
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author Barrie, Christopher
Törnberg, Petter
author_facet Barrie, Christopher
Törnberg, Petter
contents Ashery et al. recently argue that large language models (LLMs), when paired to play a classic "naming game," spontaneously develop linguistic conventions reminiscent of human social norms. Here, we show that their results are better explained by data leakage: the models simply reproduce conventions they already encountered during pre-training. Despite the authors' mitigation measures, we provide multiple analyses demonstrating that the LLMs recognize the structure of the coordination game and recall its outcomes, rather than exhibit "emergent" conventions. Consequently, the observed behaviors are indistinguishable from memorization of the training corpus. We conclude by pointing to potential alternative strategies and reflecting more generally on the place of LLMs for social science models.
format Preprint
id arxiv_https___arxiv_org_abs_2505_23796
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Emergent LLM behaviors are observationally equivalent to data leakage
Barrie, Christopher
Törnberg, Petter
Computation and Language
Computer Science and Game Theory
Ashery et al. recently argue that large language models (LLMs), when paired to play a classic "naming game," spontaneously develop linguistic conventions reminiscent of human social norms. Here, we show that their results are better explained by data leakage: the models simply reproduce conventions they already encountered during pre-training. Despite the authors' mitigation measures, we provide multiple analyses demonstrating that the LLMs recognize the structure of the coordination game and recall its outcomes, rather than exhibit "emergent" conventions. Consequently, the observed behaviors are indistinguishable from memorization of the training corpus. We conclude by pointing to potential alternative strategies and reflecting more generally on the place of LLMs for social science models.
title Emergent LLM behaviors are observationally equivalent to data leakage
topic Computation and Language
Computer Science and Game Theory
url https://arxiv.org/abs/2505.23796