Equality-Minded Treatment Choice. Issue 2 (20th March 2021)

• Record Type: Journal Article
• Authors: Kitagawa, Toru; Tetenov, Aleksey
• Is Part Of: Journal of business & economic statistics. Volume 39:Issue 2(2021)
• Page Start: 561
• Page End: 574
• Publication Date: 2021-03-20
• Subjects: Gini coefficient -- Inequality index -- Program evaluation -- Social welfare -- Treatment choice; Economics -- Statistical methods -- Periodicals; Commercial statistics -- Periodicals; Économie politique -- Méthodes statistiques -- Périodiques; Statistique commerciale -- Périodiques; 330.015195
• DOI: 10.1080/07350015.2019.1688664
• Languages: English
• ISSNs: 0735-0015

Abstract

Abstract: The goal of many randomized experiments and quasi-experimental studies in economics is to inform policies that aim to raise incomes and reduce economic inequality. A policy maximizing the sum of individual incomes may not be desirable if it magnifies economic inequality and post-treatment redistribution of income is infeasible. This article develops a method to estimate the optimal treatment assignment policy based on observable individual covariates when the policy objective is to maximize an equality-minded rank-dependent social welfare function, which puts higher weight on individuals with lower-ranked outcomes. We estimate the optimal policy by maximizing a sample analog of the rank-dependent welfare over a properly constrained set of policies. We show that the average social welfare attained by our estimated policy converges to the maximal attainable welfare at n − 1 / 2 rate uniformly over a large class of data distributions when the propensity score is known. We also show that this rate is minimax optimal. We provide an application of our method using the data from the National JTPA Study. Supplementary materials for this article are available online.