What Do You Mean? Exploring the Alleged Theory of Mind Abilities of Large Language Models

Agnese Lombardi, Alessandro Lenci


Abstract
This study explores the capacity of Large Language Models (LLMs) to perform tasks requiring Theory of Mind (ToM), a critical component of pragmatic language understanding. Although previous work suggests that LLMs may exhibit emergent ToM abilities, this research examines whether such capabilities genuinely involve reasoning about beliefs or merely reflect the reliance on shallow statistical cues. Through a series of controlled experiments featuring indirect speech acts and verbal irony, we assess how belief contexts influence LLM interpretations. The results reveal that, although LLMs occasionally succeed in decoding communicative intentions, their performance is not attributable to human-like ToM reasoning. This work underscores the limitations of LLMs in simulating humanlike ToM and offers insight into their interpretive biases, contributing to a deeper understanding of their linguistic capabilities.1
Anthology ID:
2026.tacl-1.111
Volume:
Transactions of the Association for Computational Linguistics, Volume 14
Month:
Year:
2026
Address:
Cambridge, MA
Venue:
TACL
SIG:
Publisher:
MIT Press
Note:
Pages:
2391–2410
Language:
URL:
https://aclanthology.org/2026.tacl-1.111/
DOI:
10.1162/tacl.a.807
Bibkey:
Cite (ACL):
Agnese Lombardi and Alessandro Lenci. 2026. What Do You Mean? Exploring the Alleged Theory of Mind Abilities of Large Language Models. Transactions of the Association for Computational Linguistics, 14:2391–2410.
Cite (Informal):
What Do You Mean? Exploring the Alleged Theory of Mind Abilities of Large Language Models (Lombardi & Lenci, TACL 2026)
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PDF:
https://aclanthology.org/2026.tacl-1.111.pdf