Exploring LLMs’ Ability to Spontaneously and Conditionally Modify Moral Expressions through Text Manipulation

Candida Maria Greco, Lucio La Cava, Lorenzo Zangari, Andrea Tagarelli


Abstract
Morality serves as the foundation of societal structure, guiding legal systems, shaping cultural values, and influencing individual self-perception. With the rise and pervasiveness of generative AI tools, and particularly Large Language Models (LLMs), concerns arise regarding how these tools capture and potentially alter moral dimensions through machine-generated text manipulation. Based on the Moral Foundation Theory, our work investigates this topic by analyzing the behavior of 12 LLMs among the most widely used Open and uncensored (i.e., ”abliterated”) models, and leveraging human-annotated datasets used in moral-related analysis. Results have shown varying levels of alteration of moral expressions depending on the type of text modification task and moral-related conditioning prompt.
Anthology ID:
2025.acl-long.883
Volume:
Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)
Month:
July
Year:
2025
Address:
Vienna, Austria
Editors:
Wanxiang Che, Joyce Nabende, Ekaterina Shutova, Mohammad Taher Pilehvar
Venue:
ACL
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
18047–18070
Language:
URL:
https://preview.aclanthology.org/ingestion-acl-25/2025.acl-long.883/
DOI:
Bibkey:
Cite (ACL):
Candida Maria Greco, Lucio La Cava, Lorenzo Zangari, and Andrea Tagarelli. 2025. Exploring LLMs’ Ability to Spontaneously and Conditionally Modify Moral Expressions through Text Manipulation. In Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), pages 18047–18070, Vienna, Austria. Association for Computational Linguistics.
Cite (Informal):
Exploring LLMs’ Ability to Spontaneously and Conditionally Modify Moral Expressions through Text Manipulation (Greco et al., ACL 2025)
Copy Citation:
PDF:
https://preview.aclanthology.org/ingestion-acl-25/2025.acl-long.883.pdf