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On analysing the world distribution of income

Author Info

  • Anthony Barnes Atkinson

    ()

    (Nuffield College, Oxford)

  • Andrea Brandolini

    ()

    (Bank of Italy)

Abstract

This paper argues that consideration of world inequality should cause us to re-examine the key concepts underlying the welfare approach to the measurement of income inequality and the inter-relation between the measurement of inequality and the measurement of poverty. There are three reasons why we feel that a re-examination is necessary: (i) the extent of global income differences means that we cannot simply carry over the methods used at a national level; we need a more flexible measure; (ii) we have to reconcile measures of world inequality and world poverty; and (iii) we need to explore more fully the different ways in which measures may be relative or absolute. This leads us to propose a new measure, which (a) combines poverty and inequality, including provision for those who are concerned only with poverty, (b) incorporates different approaches to the measurement of inequality; and (c) allows the cost of inequality to be expressed in different ways. Applied to the world distribution for the period 1820-1992, the new measure provides different perspectives on the evolution of global inequality.

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Paper provided by Bank of Italy, Economic Research and International Relations Area in its series Temi di discussione (Economic working papers) with number 701.

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Date of creation: Mar 2009
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Handle: RePEc:bdi:wptemi:td_701_09
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Keywords: global income inequality; absolute vs. relative inequality; poverty; world citizens;

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Find related papers by JEL classification:
  • D31 - Microeconomics - - Distribution - - - Personal Income and Wealth Distribution
  • C80 - Mathematical and Quantitative Methods - - Data Collection and Data Estimation Methodology; Computer Programs - - - General

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