Abstract
Changes in relative prices of commodities consumed in different shares across income groups can be expected to alter real income differentials between these groups. Using Mozambican household budget survey and price data from 2002/03 and 2008/09, we show that once relative price increases are accounted for, inequality of real consumption increases substantially. We obtain this result by constructing a price deflator that reflects divergent price dynamics of different product categories. Since the main factors driving this result prevail in other developing countries, it is likely that inequality may be underestimated elsewhere.
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Abdelkrim, A., Duclos, J.: DASP: Distributive Analysis Stata Package. PEP, World Bank, UNDP and Université Laval. (2007)
Amble, N., Stewart, K.: Experimental price index for elderly consumers. Mon. Labor Rev. 117(5), 11–16 (1994)
Arndt, C., Benfica, R., Maximiano, N., Nucifora, A., Thurlow, J.: Higher fuel and food prices: impacts and responses for Mozambique. Agric. Econ. 39(s1), 497–511 (2008)
Arndt, C., Hussain, M.A., Jones, E.S., Nhate, V., Tarp, F., Thurlow, J.: Explaining the evolution of poverty: the case of Mozambique. Am. J. Agric. Econ. 94(4), 854–872 (2012)
Arndt, C., Simler, K. R.: Estimating UtilityConsistent Poverty Lines with Applications to Egypt and Mozambique. Econ. Dev. Cult. Chang. 58(3), 449–474 (2010)
Cage, R.A., Garner, T.I., Ruiz-Castillo, J.: Constructing household specific consumer price indexes: an analysis of different techniques and methods. Bureau of Labor Statistics Working Paper 354, U.S. Department of Labor, Washington, D.C. (2002)
Cirera, X., Arndt, C.: Measuring the impact of road rehabilitation on spatial market efficiency in maize markets in Mozambique. Agric. Econ. 39(1), 17–28 (2008)
Cobham, A., Sumner, A.: Is it all about the tails? The Palma measure of income inequality. CGDEV Working Paper 343, Center for Global Development, Washington, D.C (2013)
Crawford, I., Smith, Z.: Distributional aspects of inflation. IFS Commentary 90, Institute for Fiscal Studies, London, UK (2002)
Dashwood, H.S.: Inequality, leadership, and the crisis in Zimbabwe. Int. J. 57(2), 209–226 (2002)
Deaton, A.: Getting prices right: what should be done. J. Econ. Perspect. 12(1), 37–46 (1998)
Dillon, B.M., Barrett, C.B.: The impact of world oil price shocks on maize prices in East Africa. University of Melbourne, Melbourne (2013)
Garner, T.I., Johnson, D.S., Kokoski, M.F.: An experimental consumer price index for the poor. Mon. Labor Rev. 119(9), 32–42 (1996)
Gasparini, L., Cruces, G., Tornarolli, L.: Recent trends in income inequality in Latin America. Economía 11(2), 147–201 (2011)
Günther, I., Grimm, M.: Measuring pro-poor growth when relative prices shift. J. Dev. Econ. 82, 245–256 (2007)
Hagemann, R.P.: The variability of inflation rates across household types. J. Money, Credit Bank. 14(4), 494–510 (1982)
Hanlon, J.: Mozambique: The panic and rage of the poor. Rev. Afr. Polit. Econ. 36(119), 125–130 (2009)
IMF: World Economic Outlook. International Monetary Fund, Washington, D.C (2013)
INE: Categorias de Dados e Indicadores Sector Real. Instituto Nacional de Estatística, Maputo, Mozambique. Available at: http://www.ine.gov.mz/pt/ResourceCenter (2002)
INE: Inquérito sobre orçamento familiar, 2008/09 - Quadros basicos. Instituto Nacional de Estatística, Maputo, Mozambique (2010)
Leicester, A., O’Dea, C., Oldfield, Z.: The inflation experience of older households. IFS Commentary 106. Institute for Fiscal Studies, London, UK (2008)
Manjengwa, J., Feresu, S., Chimhowu, A. (eds.): Understanding poverty, promoting wellbeing and sustainable development. Institute of Environmental Studies, Harare, Zimbabwe (2012)
Milanovic, B.: A simple way to calculate the Gini coefficient, and some implications. Econ. Lett. 56(1), 45–49 (1997)
MPF: Poverty and well-being in Mozambique: the second national assessment (2002-2003). National Directorate of Planning and Budget, Ministry of Planning and Finance, Economic Research Bureau, Ministry of Planning and Finance, International Food Policy Research Institute, Purdue University, Maputo, Mozambique (2004)
MPD/DNEAP: Poverty and well-being in Mozambique: the third national assessment. National Directorate of Studies and Policy Analysis, Ministry of Planning and Development, Maputo, Mozambique (2010)
Muellbauer, J.: Prices and inequality: the United Kingdom experience. Econ. J. 84, 32–55 (1974)
OECD. Stat Extract, http://stats.oecd.org/Index.aspx?DatasetCode=IDD. Accessed on October, 22nd (2014)
Ogwang, T.: A convenient method of computing the Gini index and its standard error. Oxf. Bullet. Econ. Stat. 62(1), 123–129 (2000)
Oosthuizen, M.: Inflation inequality in South Africa. DPRU Working Paper 13/158, Development Policy Research Unit. University of Cape Town, Cape Town (2013)
Palma, J.G.: Homogeneous middles vs. heterogeneous tails, and the end of the ‘inverted U’: It’s all about the share of the rich. Dev. Chang. 42(1), 87–153 (2011)
Ravallion, M., Bidani, B.: How robust is a poverty profile? World Bank Econ. Rev. 8(1), 75–102 (1994)
Schultze, C.L., Mackie, C.: At What Price? Conceptualizing and Measuring Cost-of-Living and Price Indexes. National Academy Press, Washington D.C. (2002)
Ssewanyana, N.S., Okidi, A.J., Angemi, D., Barungi, V.: Understanding the determinants of income inequality in Uganda. CSAE WPS/2004-29. Centre for the Study of African Economies, Oxford, UK (2004)
Ssewanyana, S. N., Kasirye, I: Poverty and Inequality Dynamics in Uganda: Insights from the National Panel Surveys 2005/06 and 2009/10. EPRC Research Series 94. Economic Policy Research Centre, Kampala, Uganda (2012)
Tarp, F., Simler, K., Matusse, C., Heltberg, R., Dava, G.: The robustness of poverty profiles reconsidered. Econ. Dev. Cult. Chang. 51(1), 77–108 (2002)
Tostão, E., Brorsen, B.W.: Spatial price efficiency in Mozambique’s post-reform maize markets. Agric. Econ. 33(2), 205–214 (2005)
UNU-WIDER: World Income Inequality Database (WIID3.0b). September 2014, UNU-WIDER, Helsinki (2014)
World Bank: Poverty trends in Uganda: who gained and who was left behind?. Inclusive growth policy note 1. World Bank, Washington, DC (2012)
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Arndt, C., Jones, S. & Salvucci, V. When do relative prices matter for measuring income inequality? The case of food prices in Mozambique. J Econ Inequal 13, 449–464 (2015). https://doi.org/10.1007/s10888-015-9303-5
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DOI: https://doi.org/10.1007/s10888-015-9303-5