Aligning with Whom? Large Language Models Have Gender and Racial Biases in Subjective NLP Tasks

• URL: http://arxiv.org/abs/2311.09730v1
• Date: Thu, 16 Nov 2023 10:02:24 GMT
• Title: Aligning with Whom? Large Language Models Have Gender and Racial Biases in Subjective NLP Tasks
• Authors: Huaman Sun, Jiaxin Pei, Minje Choi, David Jurgens
• Abstract summary: We conduct experiments on four popular large language models (LLMs) to investigate their capability to understand group differences and potential biases in their predictions for politeness and offensiveness. We find that for both tasks, model predictions are closer to the labels from White and female participants. More specifically, when being prompted to respond from the perspective of "Black" and "Asian" individuals, models show lower performance in predicting both overall scores as well as the scores from corresponding groups.
• Score: 15.015148115215315
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Human perception of language depends on personal backgrounds like gender and ethnicity. While existing studies have shown that large language models (LLMs) hold values that are closer to certain societal groups, it is unclear whether their prediction behaviors on subjective NLP tasks also exhibit a similar bias. In this study, leveraging the POPQUORN dataset which contains annotations of diverse demographic backgrounds, we conduct a series of experiments on four popular LLMs to investigate their capability to understand group differences and potential biases in their predictions for politeness and offensiveness. We find that for both tasks, model predictions are closer to the labels from White and female participants. We further explore prompting with the target demographic labels and show that including the target demographic in the prompt actually worsens the model's performance. More specifically, when being prompted to respond from the perspective of "Black" and "Asian" individuals, models show lower performance in predicting both overall scores as well as the scores from corresponding groups. Our results suggest that LLMs hold gender and racial biases for subjective NLP tasks and that demographic-infused prompts alone may be insufficient to mitigate such effects. Code and data are available at https://github.com/Jiaxin-Pei/LLM-Group-Bias.

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