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Main Authors: Xiang, Chaoyi, Liu, Chunhua, De Deyne, Simon, Frermann, Lea
Format: Preprint
Published: 2025
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Online Access:https://arxiv.org/abs/2505.19674
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author Xiang, Chaoyi
Liu, Chunhua
De Deyne, Simon
Frermann, Lea
author_facet Xiang, Chaoyi
Liu, Chunhua
De Deyne, Simon
Frermann, Lea
contents As the impact of large language models increases, understanding the moral values they reflect becomes ever more important. Assessing the nature of moral values as understood by these models via direct prompting is challenging due to potential leakage of human norms into model training data, and their sensitivity to prompt formulation. Instead, we propose to use word associations, which have been shown to reflect moral reasoning in humans, as low-level underlying representations to obtain a more robust picture of LLMs' moral reasoning. We study moral differences in associations from western English-speaking communities and LLMs trained predominantly on English data. First, we create a large dataset of LLM-generated word associations, resembling an existing data set of human word associations. Next, we propose a novel method to propagate moral values based on seed words derived from Moral Foundation Theory through the human and LLM-generated association graphs. Finally, we compare the resulting moral conceptualizations, highlighting detailed but systematic differences between moral values emerging from English speakers and LLM associations.
format Preprint
id arxiv_https___arxiv_org_abs_2505_19674
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Comparing Moral Values in Western English-speaking societies and LLMs with Word Associations
Xiang, Chaoyi
Liu, Chunhua
De Deyne, Simon
Frermann, Lea
Computation and Language
As the impact of large language models increases, understanding the moral values they reflect becomes ever more important. Assessing the nature of moral values as understood by these models via direct prompting is challenging due to potential leakage of human norms into model training data, and their sensitivity to prompt formulation. Instead, we propose to use word associations, which have been shown to reflect moral reasoning in humans, as low-level underlying representations to obtain a more robust picture of LLMs' moral reasoning. We study moral differences in associations from western English-speaking communities and LLMs trained predominantly on English data. First, we create a large dataset of LLM-generated word associations, resembling an existing data set of human word associations. Next, we propose a novel method to propagate moral values based on seed words derived from Moral Foundation Theory through the human and LLM-generated association graphs. Finally, we compare the resulting moral conceptualizations, highlighting detailed but systematic differences between moral values emerging from English speakers and LLM associations.
title Comparing Moral Values in Western English-speaking societies and LLMs with Word Associations
topic Computation and Language
url https://arxiv.org/abs/2505.19674