Does AI help humans make better decisions? A statistical evaluation framework for experimental and observational studies

Fuente: arXiv
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Main Authors: Ben-Michael, Eli, Greiner, D. James, Huang, Melody, Imai, Kosuke, Jiang, Zhichao, Shin, Sooahn
Format: Preprint
Published: 2024
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author Ben-Michael, Eli
Greiner, D. James
Huang, Melody
Imai, Kosuke
Jiang, Zhichao
Shin, Sooahn
author_facet Ben-Michael, Eli
Greiner, D. James
Huang, Melody
Imai, Kosuke
Jiang, Zhichao
Shin, Sooahn
contents The use of Artificial Intelligence (AI), or more generally data-driven algorithms, has become ubiquitous in today's society. Yet, in many cases and especially when stakes are high, humans still make final decisions. The critical question, therefore, is whether AI helps humans make better decisions compared to a human-alone or AI-alone system. We introduce a new methodological framework to empirically answer this question with a minimal set of assumptions. We measure a decision maker's ability to make correct decisions using standard classification metrics based on the baseline potential outcome. We consider a single-blinded and unconfounded treatment assignment, where the provision of AI-generated recommendations is assumed to be randomized across cases with humans making final decisions. Under this study design, we show how to compare the performance of three alternative decision-making systems--human-alone, human-with-AI, and AI-alone. Importantly, the AI-alone system includes any individualized treatment assignment, including those that are not used in the original study. We also show when AI recommendations should be provided to a human-decision maker, and when one should follow such recommendations. We apply the proposed methodology to our own randomized controlled trial evaluating a pretrial risk assessment instrument. We find that the risk assessment recommendations do not improve the classification accuracy of a judge's decision to impose cash bail. Furthermore, we find that replacing a human judge with algorithms--the risk assessment score and a large language model in particular--leads to a worse classification performance.
format Preprint
id arxiv_https___arxiv_org_abs_2403_12108
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Does AI help humans make better decisions? A statistical evaluation framework for experimental and observational studies
Ben-Michael, Eli
Greiner, D. James
Huang, Melody
Imai, Kosuke
Jiang, Zhichao
Shin, Sooahn
Artificial Intelligence
General Economics
Economics
Applications
Methodology
The use of Artificial Intelligence (AI), or more generally data-driven algorithms, has become ubiquitous in today's society. Yet, in many cases and especially when stakes are high, humans still make final decisions. The critical question, therefore, is whether AI helps humans make better decisions compared to a human-alone or AI-alone system. We introduce a new methodological framework to empirically answer this question with a minimal set of assumptions. We measure a decision maker's ability to make correct decisions using standard classification metrics based on the baseline potential outcome. We consider a single-blinded and unconfounded treatment assignment, where the provision of AI-generated recommendations is assumed to be randomized across cases with humans making final decisions. Under this study design, we show how to compare the performance of three alternative decision-making systems--human-alone, human-with-AI, and AI-alone. Importantly, the AI-alone system includes any individualized treatment assignment, including those that are not used in the original study. We also show when AI recommendations should be provided to a human-decision maker, and when one should follow such recommendations. We apply the proposed methodology to our own randomized controlled trial evaluating a pretrial risk assessment instrument. We find that the risk assessment recommendations do not improve the classification accuracy of a judge's decision to impose cash bail. Furthermore, we find that replacing a human judge with algorithms--the risk assessment score and a large language model in particular--leads to a worse classification performance.
title Does AI help humans make better decisions? A statistical evaluation framework for experimental and observational studies
topic Artificial Intelligence
General Economics
Economics
Applications
Methodology
url https://arxiv.org/abs/2403.12108