The PIMMUR Principles: Ensuring Validity in Collective Behavior of LLM Societies

Fuente: arXiv
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Auteurs principaux: Zhou, Jiaxu, Huang, Jen-tse, Zhou, Xuhui, Lam, Man Ho, Wang, Xintao, Zhu, Hao, Wang, Wenxuan, Sap, Maarten
Format: Preprint
Publié: 2025
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author Zhou, Jiaxu
Huang, Jen-tse
Zhou, Xuhui
Lam, Man Ho
Wang, Xintao
Zhu, Hao
Wang, Wenxuan
Sap, Maarten
author_facet Zhou, Jiaxu
Huang, Jen-tse
Zhou, Xuhui
Lam, Man Ho
Wang, Xintao
Zhu, Hao
Wang, Wenxuan
Sap, Maarten
contents Large language models (LLMs) are increasingly deployed to simulate human collective behaviors, yet the methodological rigor of these "AI societies" remains under-explored. Through a systematic audit of 39 recent studies, we identify six pervasive flaws-spanning agent profiles, interaction, memory, control, unawareness, and realism (PIMMUR). Our analysis reveals that 89.7% of studies violate at least one principle, undermining simulation validity. We demonstrate that frontier LLMs correctly identify the underlying social experiment in 50.8% of cases, while 61.0% of prompts exert excessive control that pre-determines outcomes. By reproducing five representative experiments (e.g., telephone game), we show that reported collective phenomena often vanish or reverse when PIMMUR principles are enforced, suggesting that many "emergent" behaviors are methodological artifacts rather than genuine social dynamics. Our findings suggest that current AI simulations may capture model-specific biases rather than universal human social behaviors, raising critical concerns about the use of LLMs as scientific proxies for human society.
format Preprint
id arxiv_https___arxiv_org_abs_2509_18052
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle The PIMMUR Principles: Ensuring Validity in Collective Behavior of LLM Societies
Zhou, Jiaxu
Huang, Jen-tse
Zhou, Xuhui
Lam, Man Ho
Wang, Xintao
Zhu, Hao
Wang, Wenxuan
Sap, Maarten
Computation and Language
Computers and Society
Large language models (LLMs) are increasingly deployed to simulate human collective behaviors, yet the methodological rigor of these "AI societies" remains under-explored. Through a systematic audit of 39 recent studies, we identify six pervasive flaws-spanning agent profiles, interaction, memory, control, unawareness, and realism (PIMMUR). Our analysis reveals that 89.7% of studies violate at least one principle, undermining simulation validity. We demonstrate that frontier LLMs correctly identify the underlying social experiment in 50.8% of cases, while 61.0% of prompts exert excessive control that pre-determines outcomes. By reproducing five representative experiments (e.g., telephone game), we show that reported collective phenomena often vanish or reverse when PIMMUR principles are enforced, suggesting that many "emergent" behaviors are methodological artifacts rather than genuine social dynamics. Our findings suggest that current AI simulations may capture model-specific biases rather than universal human social behaviors, raising critical concerns about the use of LLMs as scientific proxies for human society.
title The PIMMUR Principles: Ensuring Validity in Collective Behavior of LLM Societies
topic Computation and Language
Computers and Society
url https://arxiv.org/abs/2509.18052