The Moral Gap of Large Language Models

Fuente: arXiv
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Main Authors: Skorski, Maciej, Landowska, Alina
Format: Preprint
Published: 2025
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author Skorski, Maciej
Landowska, Alina
author_facet Skorski, Maciej
Landowska, Alina
contents Moral foundation detection is crucial for analyzing social discourse and developing ethically-aligned AI systems. While large language models excel across diverse tasks, their performance on specialized moral reasoning remains unclear. This study provides the first comprehensive comparison between state-of-the-art LLMs and fine-tuned transformers across Twitter and Reddit datasets using ROC, PR, and DET curve analysis. Results reveal substantial performance gaps, with LLMs exhibiting high false negative rates and systematic under-detection of moral content despite prompt engineering efforts. These findings demonstrate that task-specific fine-tuning remains superior to prompting for moral reasoning applications.
format Preprint
id arxiv_https___arxiv_org_abs_2507_18523
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle The Moral Gap of Large Language Models
Skorski, Maciej
Landowska, Alina
Computation and Language
Computers and Society
Human-Computer Interaction
Machine Learning
Moral foundation detection is crucial for analyzing social discourse and developing ethically-aligned AI systems. While large language models excel across diverse tasks, their performance on specialized moral reasoning remains unclear. This study provides the first comprehensive comparison between state-of-the-art LLMs and fine-tuned transformers across Twitter and Reddit datasets using ROC, PR, and DET curve analysis. Results reveal substantial performance gaps, with LLMs exhibiting high false negative rates and systematic under-detection of moral content despite prompt engineering efforts. These findings demonstrate that task-specific fine-tuning remains superior to prompting for moral reasoning applications.
title The Moral Gap of Large Language Models
topic Computation and Language
Computers and Society
Human-Computer Interaction
Machine Learning
url https://arxiv.org/abs/2507.18523