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Main Authors: Gillis, Talia, Stacy, Riley, Brumer, Sam, Black, Emily
Format: Preprint
Published: 2025
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Online Access:https://arxiv.org/abs/2512.17007
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author Gillis, Talia
Stacy, Riley
Brumer, Sam
Black, Emily
author_facet Gillis, Talia
Stacy, Riley
Brumer, Sam
Black, Emily
contents This paper compares two legal frameworks -- disparate impact (DI) and unfair, deceptive, or abusive acts or practices (UDAP) -- as tools for evaluating algorithmic discrimination, focusing on the example of fair lending. While DI has traditionally served as the foundation of fair lending law, recent regulatory efforts have invoked UDAP, a doctrine rooted in consumer protection, as an alternative means to address algorithmic discrimination harms. We formalize and operationalize both doctrines in a simulated lending setting to assess how they evaluate algorithmic disparities. While some regulatory interpretations treat UDAP as operating similarly to DI, we argue it is an independent and analytically distinct framework. In particular, UDAP's "unfairness" prong introduces elements such as avoidability of harm and proportionality balancing, while its "deceptive" and "abusive" standards may capture forms of algorithmic harm that elude DI analysis. At the same time, translating UDAP into algorithmic settings exposes unresolved ambiguities, underscoring the need for further regulatory guidance if it is to serve as a workable standard.
format Preprint
id arxiv_https___arxiv_org_abs_2512_17007
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Algorithmic UDAP
Gillis, Talia
Stacy, Riley
Brumer, Sam
Black, Emily
Computers and Society
This paper compares two legal frameworks -- disparate impact (DI) and unfair, deceptive, or abusive acts or practices (UDAP) -- as tools for evaluating algorithmic discrimination, focusing on the example of fair lending. While DI has traditionally served as the foundation of fair lending law, recent regulatory efforts have invoked UDAP, a doctrine rooted in consumer protection, as an alternative means to address algorithmic discrimination harms. We formalize and operationalize both doctrines in a simulated lending setting to assess how they evaluate algorithmic disparities. While some regulatory interpretations treat UDAP as operating similarly to DI, we argue it is an independent and analytically distinct framework. In particular, UDAP's "unfairness" prong introduces elements such as avoidability of harm and proportionality balancing, while its "deceptive" and "abusive" standards may capture forms of algorithmic harm that elude DI analysis. At the same time, translating UDAP into algorithmic settings exposes unresolved ambiguities, underscoring the need for further regulatory guidance if it is to serve as a workable standard.
title Algorithmic UDAP
topic Computers and Society
url https://arxiv.org/abs/2512.17007