International income poverty measurement: which way now?

Stephan Klasen, Tatyana Krivobokova, Friederike Greb, Rahul Lahoti, Syamsul Pasaribu and Manuel Wiesenfarth
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Tatyana Krivobokova: University of Göttingen
Friederike Greb: Food and Agricultural Organization
Manuel Wiesenfarth: German Cancer Research Center

The Journal of Economic Inequality, 2016, vol. 14, issue 2, No 5, 199-225

Abstract: Abstract We critically review conceptual and empirical issues surrounding the derivation of the international poverty line, expressed in PPP-adjusted dollars and linked to various rounds of the International Comparison Program (ICP). We find that there are some limitations in the current estimation of these lines, but show that statistically superior methods lead to lines that are relatively robust and confirm the $1.25 using 2005 PPPs and suggest $1.67–1.71 using 2011 PPPs (or close to the $1.90 proposed by the World Bank if we follow the World Bank’s approach of adjusting inflation rates in some countries); they also roughly confirm the current shape of the proposed ‘weakly relative’ poverty line. Using the new absolute line based on 2011 PPPs would lead to substantially lower poverty in our estimation. The extent of the decline depends on whether and how one treats China, India, and Indonesia differently from other countries in the 2005 and 2011 PPPs. More seriously, we note that the dependence on successive ICP rounds creates conceptual and empirical problems that have become worse over time so that we suggest that it would be best to consider alternatives to the current reliance on ICP rounds and the resulting PPPs. As a short-term solution we propose to fix the international poverty line in national currencies using either the 2005 or 2011 level; in the medium term, we argue for global poverty measurement based on internationally coordinated national poverty measurement.

Keywords: Poverty; World Bank; Dollar-a-day; Weakly relative poverty (search for similar items in EconPapers)
Date: 2016
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DOI: 10.1007/s10888-016-9324-8

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