The Empirical Welfare Content of International Price and Income Comparisons

Fuente: arXiv
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Main Author: Wu, Hubert
Format: Preprint
Published: 2025
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author Wu, Hubert
author_facet Wu, Hubert
contents Multilateral index numbers are often used to make claims about welfare, such as treating PPPs as cross-country costs of living or real incomes as indicators of living standards. However, such interpretations may not be consistent with the observed data. To study this problem, I derive multilateral bounds on welfare implied by revealed preference and use these to appraise leading comparison methods. My findings support the welfare-interpretability of the contemporary indices I examine, but not of market exchange rates. When using a welfare-consistent multilateral index, the world in 2017 appears larger and more equal vis-à-vis the United States than conventional measures.
format Preprint
id arxiv_https___arxiv_org_abs_2504_16654
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle The Empirical Welfare Content of International Price and Income Comparisons
Wu, Hubert
General Economics
Economics
Multilateral index numbers are often used to make claims about welfare, such as treating PPPs as cross-country costs of living or real incomes as indicators of living standards. However, such interpretations may not be consistent with the observed data. To study this problem, I derive multilateral bounds on welfare implied by revealed preference and use these to appraise leading comparison methods. My findings support the welfare-interpretability of the contemporary indices I examine, but not of market exchange rates. When using a welfare-consistent multilateral index, the world in 2017 appears larger and more equal vis-à-vis the United States than conventional measures.
title The Empirical Welfare Content of International Price and Income Comparisons
topic General Economics
Economics
url https://arxiv.org/abs/2504.16654