On Measuring Global Poverty

This article critically assesses prevailing measures of global poverty. A welfarist interpretation of global poverty lines is augmented by the idea of normative functionings, the cost of which varies across countries. In this light, current absolute measures are seen to ignore important social effec...

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Bibliographic Details
Published in:Annual review of economics 2020-08, Vol.12 (1), p.167-188
Main Author: Ravallion, Martin
Format: Article
Language:English
Subjects:
Developing countries
Economic theory
functionings
Income
International economics
JEL I32
JEL O10
LDCs
nutrition
Poverty
poverty lines
prices
relative income
Welfare
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Summary:This article critically assesses prevailing measures of global poverty. A welfarist interpretation of global poverty lines is augmented by the idea of normative functionings, the cost of which varies across countries. In this light, current absolute measures are seen to ignore important social effects on welfare, while popular, strongly relative measures ignore absolute levels of living. It is argued that a new hybrid measure is called for, combining absolute and weakly relative measures consistent with how national lines vary across countries. Illustrative calculations indicate that we are seeing a falling incidence of poverty globally over the past 30 years. This is mainly due to lower absolute poverty counts in the developing world. While fewer people are poor by the global absolute standard, more are poor by the country-specific relative standard. The vast bulk of poverty, both absolute and relative, is now found in the developing world.
ISSN:1941-1383
1941-1391
DOI:10.1146/annurev-economics-081919-022924