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On the properties of the two main types of global poverty lines

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  • Decerf, Benoit

Abstract

Global poverty lines belong to two main types that differ on how the poverty line’s nominal monetary amount is adjusted to prevailing prices and preferences. “Objective” poverty lines capture the cost of a fixed list of achievements. “Welfaristic” poverty lines capture the cost of a fixed level of welfare. Longstanding debates oppose their respective proponents. This conceptual paper is the first to contrast the properties of these two types of poverty lines. Our framework considers both heterogeneous prices and heterogeneous preferences. Our results clarify the normative principles that differentiate them and shed light on these debates. Which type of poverty line satisfies stronger versions of our properties depends on the extent of preferences heterogeneity. We show that, under heterogeneous preferences, the World Bank’s International Poverty Line cannot consistently reflect a fixed list of achievements.

Suggested Citation

  • Decerf, Benoit, 2025. "On the properties of the two main types of global poverty lines," Journal of Development Economics, Elsevier, vol. 173(C).
    • Handle: RePEc:eee:deveco:v:173:y:2025:i:c:s0304387824001457
    DOI: 10.1016/j.jdeveco.2024.103396
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    1. Koen Decancq & Marc Fleurbaey & François Maniquet, 2019. "Multidimensional poverty measurement with individual preferences," The Journal of Economic Inequality, Springer;Society for the Study of Economic Inequality, vol. 17(1), pages 29-49, March.
    2. Francisco H. G. Ferreira & Shaohua Chen & Andrew Dabalen & Yuri Dikhanov & Nada Hamadeh & Dean Jolliffe & Ambar Narayan & Espen Beer Prydz & Ana Revenga & Prem Sangraula & Umar Serajuddin & Nobuo Yosh, 2016. "A global count of the extreme poor in 2012: data issues, methodology and initial results," The Journal of Economic Inequality, Springer;Society for the Study of Economic Inequality, vol. 14(2), pages 141-172, June.
    3. David Atkin, 2016. "The Caloric Costs of Culture: Evidence from Indian Migrants," American Economic Review, American Economic Association, vol. 106(4), pages 1144-1181, April.
    4. Martin Ravallion & Shaohua Chen, 2011. "Weakly Relative Poverty," The Review of Economics and Statistics, MIT Press, vol. 93(4), pages 1251-1261, November.
    5. Decerf,Benoit Marie A & Ferrando,Mery & Quinn,Natalie N., 2021. "Global Income Poverty Measurement with Preference Heterogeneity : Theory and Application," Policy Research Working Paper Series 9844, The World Bank.
    6. Fleurbaey,Marc & Maniquet,François, 2011. "A Theory of Fairness and Social Welfare," Cambridge Books, Cambridge University Press, number 9780521887427, June.
    7. Jolliffe,Dean Mitchell & Mahler,Daniel Gerszon & Lakner,Christoph & Atamanov,Aziz & Tetteh Baah,Samuel Kofi, 2022. "Assessing the Impact of the 2017 PPPs on the International Poverty Line and Global Poverty," Policy Research Working Paper Series 9941, The World Bank.
    8. Martin Ravallion & Shaohua Chen & Prem Sangraula, 2009. "Dollar a Day Revisited," The World Bank Economic Review, World Bank, vol. 23(2), pages 163-184, June.
    9. Angus Deaton & Olivier Dupriez, 2011. "Purchasing Power Parity Exchange Rates for the Global Poor," American Economic Journal: Applied Economics, American Economic Association, vol. 3(2), pages 137-166, April.
    10. Sprumont, Yves, 2012. "Resource egalitarianism with a dash of efficiency," Journal of Economic Theory, Elsevier, vol. 147(4), pages 1602-1613.
    11. Robert C. Allen, 2017. "Absolute Poverty: When Necessity Displaces Desire," American Economic Review, American Economic Association, vol. 107(12), pages 3690-3721, December.
    12. Moatsos Michail, 2016. "Global Absolute Poverty: Behind the Veil of Dollars," Journal of Globalization and Development, De Gruyter, vol. 7(2), pages 1-28, December.
    13. David Atkin, 2013. "Trade, Tastes, and Nutrition in India," American Economic Review, American Economic Association, vol. 103(5), pages 1629-1663, August.
    14. Martin Ravallion, 2020. "On Measuring Global Poverty," Annual Review of Economics, Annual Reviews, vol. 12(1), pages 167-188, August.
    15. Angus Deaton & Alan Heston, 2010. "Understanding PPPs and PPP-Based National Accounts," American Economic Journal: Macroeconomics, American Economic Association, vol. 2(4), pages 1-35, October.
    16. Herforth, Anna & Venkat, Aishwarya & Bai, Yan & Costlow, Leah & Holleman, Cindy & Masters, William A., 2022. "Methods and options to monitor the cost and affordability of a healthy diet globally Background paper for The State of Food Security and Nutrition in the World 2022," ESA Working Papers 324075, Food and Agriculture Organization of the United Nations, Agricultural Development Economics Division (ESA).
    17. Sen, Amartya K, 1976. "Poverty: An Ordinal Approach to Measurement," Econometrica, Econometric Society, vol. 44(2), pages 219-231, March.
    18. Matthijs van Veelen & Roy van der Weide, 2008. "A Note on Different Approaches to Index Number Theory," American Economic Review, American Economic Association, vol. 98(4), pages 1722-1730, September.
    19. Matthijs van Veelen, 2002. "An Impossibility Theorem Concerning Multilateral International Comparison of Volumes," Econometrica, Econometric Society, vol. 70(1), pages 369-375, January.
    20. Kraay, Aart C. & Lakner, Christoph & Ozler, Berk & Decerf, Benoit Marie A & Jolliffe, Dean Mitchell & Sterck,Olivier & Yonzan, Nishant, 2023. "A New Distribution Sensitive Index for Measuring Welfare, Poverty, and Inequality," Policy Research Working Paper Series 10470, The World Bank.
    21. repec:pri:rpdevs:deaton_price_indexes_inequality_and_the_measurement_of_world_poverty_aer. is not listed on IDEAS
    22. Ravallion, Martin, 2018. "An exploration of the changes in the international comparison program’s global economic landscape," World Development, Elsevier, vol. 105(C), pages 201-216.
    23. Dean Jolliffe & Espen Beer Prydz, 2021. "Societal Poverty: A Relative and Relevant Measure," The World Bank Economic Review, World Bank, vol. 35(1), pages 180-206.
    24. Channing Arndt & Kenneth R. Simler, 2010. "Estimating Utility-Consistent Poverty Lines with Applications to Egypt and Mozambique," Economic Development and Cultural Change, University of Chicago Press, vol. 58(3), pages 449-474, April.
    25. Marc Fleurbaey, 2007. "Social choice and the indexing dilemma," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 29(4), pages 633-648, December.
    26. Ravallion, Martin & Bidani, Benu, 1994. "How Robust Is a Poverty Profile?," The World Bank Economic Review, World Bank, vol. 8(1), pages 75-102, January.
    27. repec:bla:jecsur:v:11:y:1997:i:2:p:123-62 is not listed on IDEAS
    28. Angus Deaton, 2010. "Price Indexes, Inequality, and the Measurement of World Poverty," American Economic Review, American Economic Association, vol. 100(1), pages 5-34, March.
    29. George J. Stigler, 1945. "The Cost of Subsistence," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 27(2), pages 303-314.
    30. Heston, Alan & Summers, Robert, 1996. "International Price and Quantity Comparisons: Potentials and Pitfalls," American Economic Review, American Economic Association, vol. 86(2), pages 20-24, May.
    31. Buhong Zheng, 1997. "Aggregate Poverty Measures," Journal of Economic Surveys, Wiley Blackwell, vol. 11(2), pages 123-162, June.
    32. Marc Fleurbaey & Alain Trannoy, 2003. "The impossibility of a Paretian egalitarian," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 21(2), pages 243-263, October.
    33. Decerf, Benoit, 2023. "A preference-based theory unifying monetary and non-monetary poverty measurement," Journal of Public Economics, Elsevier, vol. 222(C).
    34. Robert C. Allen, 2017. "Absolute Poverty: When Necessity Displaces Desire REVISED," Working Papers 20170005, New York University Abu Dhabi, Department of Social Science, revised Jun 2017.
    35. Deaton, Angus S & Muellbauer, John, 1980. "An Almost Ideal Demand System," American Economic Review, American Economic Association, vol. 70(3), pages 312-326, June.
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    Cited by:

    1. Lant Pritchett & Martina Viarengo, 2025. "Raising the Bar: A Poverty Line for Global Inclusion," Growth Lab Working Papers 250, Harvard's Growth Lab.

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    More about this item

    Keywords

    Poverty measurement; Poverty line; Global poverty; Heterogeneous preferences;
    All these keywords.

    JEL classification:

    • I32 - Health, Education, and Welfare - - Welfare, Well-Being, and Poverty - - - Measurement and Analysis of Poverty
    • D63 - Microeconomics - - Welfare Economics - - - Equity, Justice, Inequality, and Other Normative Criteria and Measurement
    • E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation

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