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(Ir)rationality and cognitive biases in large language models

Macmillan-Scott, Olivia; Musolesi, Mirco; (2024) (Ir)rationality and cognitive biases in large language models. Royal Society Open Science , 11 (6) , Article 240255. 10.1098/rsos.240255. Green open access

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Abstract

Do large language models (LLMs) display rational reasoning? LLMs have been shown to contain human biases due to the data they have been trained on; whether this is reflected in rational reasoning remains less clear. In this paper, we answer this question by evaluating seven language models using tasks from the cognitive psychology literature. We find that, like humans, LLMs display irrationality in these tasks. However, the way this irrationality is displayed does not reflect that shown by humans. When incorrect answers are given by LLMs to these tasks, they are often incorrect in ways that differ from human-like biases. On top of this, the LLMs reveal an additional layer of irrationality in the significant inconsistency of the responses. Aside from the experimental results, this paper seeks to make a methodological contribution by showing how we can assess and compare different capabilities of these types of models, in this case with respect to rational reasoning.

Type: Article
Title: (Ir)rationality and cognitive biases in large language models
Open access status: An open access version is available from UCL Discovery
DOI: 10.1098/rsos.240255
Publisher version: https://doi.org/10.1098/rsos.240255
Language: English
Additional information: Copyright © 2024 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, provided the original author and source are credited.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science
URI: https://discovery.ucl.ac.uk/id/eprint/10191226
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