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Global Inequality; Levels and Trends, 1993–2005: How Sensitive are These to the Choice of PPPs and Real Income Measures?

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  • David Warner
  • D. S. Prasada Rao
  • William E. Griffiths
  • Duangkamon Chotikapanich

Abstract

Increasing global interaction between economies over the last few decades has led to growing interest on the implications of globalization. Of particular interest has been the distributional impact of globalization and whether this has been equity enhancing. Contributing to this debate, Chotikapanich et al. have previously estimated global and regional inequalities for 1993 and 2000. The current paper presents estimates of global inequality for 2005, making use of purchasing power parity (PPP) data from the 2005 International Comparison Program (ICP) round. A critical element in the estimation of regional and global inequality is the data on PPPs and real incomes. Another objective of the paper is to examine the sensitivity of the inequality results to the use of alternative sets of real incomes using different sets of PPP data to convert per capita income data into a common currency unit. The paper also compares levels and trends of global inequality measures based on real per capita income measures from the national accounts and those obtained using per capita expenditure data from household expenditure surveys. The main finding of the paper is that the populist view that globalization has increased inequality does not hold when inequality is measured at the global level. Between 1993 and 2005, inequality has consistently declined as measured both by the Gini coefficient and the Theil index. This decline in global inequality was the result of a decline in inequality between countries. The estimates do suggest that there is an overall upward trend in inequality within countries, lending some support for protestors against globalization. Another finding is that the levels of global inequality are indeed sensitive to the choice of PPPs. However, the downward trend in global inequality is consistently evident across different choices of PPPs and real incomes. We find similar trends in inequality and in the within and between components of inequality when inequality measures are based on national accounts real per capita incomes or on the survey-based real per capita expenditures.

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  • David Warner & D. S. Prasada Rao & William E. Griffiths & Duangkamon Chotikapanich, 2014. "Global Inequality; Levels and Trends, 1993–2005: How Sensitive are These to the Choice of PPPs and Real Income Measures?," Review of Income and Wealth, International Association for Research in Income and Wealth, vol. 60(S2), pages 281-304, November.
    • Handle: RePEc:bla:revinw:v:60:y:2014:i:s2:p:s281-s304
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    References listed on IDEAS

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    1. Chotikapanich, Duangkamon & Griffiths, William E. & Rao, D. S. Prasada, 2007. "Estimating and Combining National Income Distributions Using Limited Data," Journal of Business & Economic Statistics, American Statistical Association, vol. 25, pages 97-109, January.
    2. Yuri Dikhanov, 2005. "Trends in Global Income Distribution, 1970-2000, and Scenarios for 2015," Human Development Occasional Papers (1992-2007) HDOCPA-2005-08, Human Development Report Office (HDRO), United Nations Development Programme (UNDP).
    3. Branko Milanovic, 2002. "True World Income Distribution, 1988 and 1993: First Calculation Based on Household Surveys Alone," Economic Journal, Royal Economic Society, vol. 112(476), pages 51-92, January.
    4. T. Paul Schultz, 1998. "Inequality in the distribution of personal income in the world: How it is changing and why," Journal of Population Economics, Springer;European Society for Population Economics, vol. 11(3), pages 307-344.
    5. Theil, Henri, 1989. "The development of international inequality 1960-1985," Journal of Econometrics, Elsevier, vol. 42(1), pages 145-155, September.
    6. Branko Milanovic, 2005. "Can We Discern the Effect of Globalization on Income Distribution? Evidence from Household Surveys," The World Bank Economic Review, World Bank, vol. 19(1), pages 21-44.
    7. Milanovic, Branko, 2009. "Global inequality recalculated : the effect of new 2005 PPP estimates on global inequality," Policy Research Working Paper Series 5061, The World Bank.
    8. Xavier Sala-i-Martin, 2006. "The World Distribution of Income: Falling Poverty and … Convergence, Period," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 121(2), pages 351-397.
    9. Quah, Danny T, 1996. "Twin Peaks: Growth and Convergence in Models of Distribution Dynamics," Economic Journal, Royal Economic Society, vol. 106(437), pages 1045-1055, July.
    10. Duangkamon Chotikapanich & William E. Griffiths & D. S. Prasada Rao & Vicar Valencia, 2012. "Global Income Distributions and Inequality, 1993 and 2000: Incorporating Country-Level Inequality Modeled with Beta Distributions," The Review of Economics and Statistics, MIT Press, vol. 94(1), pages 52-73, February.
    11. 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.
    12. Quah, Danny, 1996. "Twin peaks : growth and convergence in models of distribution dynamics," LSE Research Online Documents on Economics 2278, London School of Economics and Political Science, LSE Library.
    13. Rati Ram, 2009. "International income distribution: comparing new ICP and the existing data," International Journal of Social Economics, Emerald Group Publishing Limited, vol. 36(6), pages 652-658, May.
    14. Chotikapanich, Duangkamon & Valenzuela, Rebecca & Rao, D S Prasada, 1997. "Global and Regional Inequality in the Distribution of Income: Estimation with Limited and Incomplete Data," Empirical Economics, Springer, vol. 22(4), pages 533-546.
    15. Xavier Sala-i-Martin, 2001. "The disturbing 'rise' of global income inequality," Economics Working Papers 616, Department of Economics and Business, Universitat Pompeu Fabra, revised Apr 2002.
    16. François Bourguignon & Christian Morrisson, 2002. "Inequality Among World Citizens: 1820-1992," American Economic Review, American Economic Association, vol. 92(4), pages 727-744, September.
    17. Xavier Sala-i-Martin, 2002. "The world distribution of income (estimated from individual country distributions)," Economics Working Papers 615, Department of Economics and Business, Universitat Pompeu Fabra, revised May 2002.
    18. Robert Ackland & Steve Dowrick & Benoit Freyens, 2013. "Measuring Global Poverty: Why PPP Methods Matter," The Review of Economics and Statistics, MIT Press, vol. 95(3), pages 813-824, July.
    19. Shaohua Chen & Martin Ravallion, 2010. "The Developing World is Poorer than We Thought, But No Less Successful in the Fight Against Poverty," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 125(4), pages 1577-1625.
    20. Danny Quah, 1996. "Twin Peaks: Growth and Convergence in Models of Distribution Dynamics," CEP Discussion Papers dp0280, Centre for Economic Performance, LSE.
    21. World Bank, 2007. "World Development Indicators 2007," World Bank Publications - Books, The World Bank Group, number 8150, December.
    22. Steve Dowrick & Muhammad Akmal, 2005. "Contradictory Trends In Global Income Inequality: A Tale Of Two Biases," Review of Income and Wealth, International Association for Research in Income and Wealth, vol. 51(2), pages 201-229, June.
    23. Theil, Henri & Theil, Henri, 1979. "World income inequality and its components," Economics Letters, Elsevier, vol. 2(1), pages 99-102.
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    2. Soondong Hong & Heejoon Han & Chang Sik Kim, 2020. "World distribution of income for 1970–2010: dramatic reduction in world income inequality during the 2000s," Empirical Economics, Springer, vol. 59(2), pages 765-798, August.
    3. Ranjan Ray & Parvin Singh, 2019. "Income Inequality in an Era of Globalisation: The Perils of Taking a Global View," Monash Economics Working Papers 08-19, Monash University, Department of Economics.
    4. José María Sarabia & Vanesa Jordá & Lorena Remuzgo, 2017. "The Theil Indices in Parametric Families of Income Distributions—A Short Review," Review of Income and Wealth, International Association for Research in Income and Wealth, vol. 63(4), pages 867-880, December.
    5. Joseph Connors & James Gwartney & Hugo Montesinos‐Yufa, 2020. "The rise and fall of worldwide income inequality, 1820–2035," Southern Economic Journal, John Wiley & Sons, vol. 87(1), pages 216-244, July.

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