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Impact of Economic Growth on Income Inequality: A Regional Perspective

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  • Majumdar, Shibalee
  • Partridge, Mark D.

Abstract

Impact of Economic Growth on Income Inequality: A Regional Perspective Shibalee Majumdar and Mark Partridge Egalitarianism refers to the doctrine of the equality of mankind and the desirability of political, economic and social equality. In this paper, we are going to refer to the concept of economic equality. Theory shows that income inequality is a condition that prevails along with economic growth. According to the utilitarian view, income inequality must exist along with economic growth in order to maximize social welfare. This is in sharp contrast to the egalitarian view according to which, all members of the society should have equal access to all economic resources in terms of economic power, wealth and contribution. Kuznets (1955) introduced the inverted U-shaped Kuznets curve that showed that in an economic system, at the initial level of low economic growth, income inequality is low and as growth occurs, income inequality increases till a threshold, after which, income inequality decreases with increased economic growth. In the United States, income inequality remained stable till the 1970s but then began to increase as earnings increased. This has been called the great U-turn by Harris, et. al (1986). Partridge et. al (1996) notes that while Kuznets held the manufacturing sector as the main driver of the economic growth, the current economic growth is being spearheaded by the services sector. While one school of research shows how income inequality might harm economic growth, empirical studies show that in the United States, a positive linkage between economic growth and income inequality has existed since the 1970s. The causality between economic growth and income inequality is an important one. The relationship may differ depending on regions or size of an economy. Fallah and Partridge (2007) show that the impact of inequality on economic growth is opposite in rural and urban settings. Most of the research dealing with the inequality-growth relationship has either looked at the impact of inequality on economic growth (Fallah and Partridge, 2007) or the impact of various socio-economic variables on inequality. Though there has been some research on finding out the causality between economic growth and wage inequality, research assessing whether economic growth affects income inequality, and that too whether the degree of the impact varies between rural and urban regions, are few. The aim of this paper is to see how economic growth affects income inequality. Does improved economic growth lead to a more redistributive system of social welfare or does the polarization become more acute? Does the impact of economic growth on income inequality differ between metropolitan and non-metropolitan areas? Does inequality vary depending on the nature of the agglomeration or the demographic composition of a region? The empirical equation is: ginicsy = gcsy-1 + educsy + popcsy + lcsy + ethcsy + immigcsy + strcsy + σcs + σy + ε where, gini denotes the gini coefficient, g denotes per capita income, edu denotes educational attainment, pop denotes population density, l denotes labour market size, eth denotes ethnic diversity, immig denotes international immigration, str denotes the structural change index, σcs denotes state fixed effects and σy denotes time fixed effects. The subscripts c, s and y denotes county, state and year, respectively. A lagged value of the per capita income is used in order to avoid any endogeneity issues. The analysis for this paper will be done at the county-level. For the dependant variable and all explanatory variables except the per capita income, a panel will be constructed using county-level data for two decades, 1990 and 2000. The gini coefficient will be calculated using the income data from the U.S. Census Bureau. Data on per capita income, educational attainment, population density and international migration can be obtained from the U.S. Census Bureau. The ethnic diversity measure will be calculated using the population data from the U.S. Census Bureau. The structural change index will be calculated by using data from the Bureau of Economic Analysis, Regional Economic Information System. The aim of the paper is to find out whether per capita income (representing economic growth) has an impact on the gini coefficient (representing income inequality), and to show whether this impact varies between rural and urban areas. The expected results are as follows. Economic growth may have a negative impact on income inequality since economic growth is often positively associated with higher investments, higher employment-generating processes and higher employment, hence giving greater access to jobs and income to a larger number of people. The degree of the impact may vary between rural and urban areas because of the following reasons. A higher population density in the urban area may lead to greater job competition and hence lead to lower access to jobs than in rural areas. International immigration is usually higher in urban areas than in rural areas. The greater influx of immigrants, as well as often seen, the willingness of the immigrants to work at lower wages may lead to lower access to jobs for the locals. This should hold true for the low-skilled jobs. For the high-skilled jobs on the other hand, educational attainment of the people will play a more important role on their ability to get jobs in the urban areas than in the rural areas. However, growth may reduce income inequality in the urban areas because higher population density results in more personal contacts, better networking and access to information, and hence more opportunities to access more and better jobs. If the results show that economic growth has a negative impact on income inequality, it will be possible to comment on the causality of the inequality-growth relationship. More so, if it is seen that economic growth has a stronger impact in decreasing income inequality in the urban areas than in the rural areas, it will show that the higher wages and more diverse job opportunities in the urban areas have a greater spillover effect than in the rural areas. The policy implication such a result may have is that higher investments will have to be made in educational and vocational training in order to generate a stream of skilled labourers, which in turn will add to economic growth and thus will lead to lower income inequality and better social cohesion.

Suggested Citation

  • Majumdar, Shibalee & Partridge, Mark D., 2009. "Impact of Economic Growth on Income Inequality: A Regional Perspective," 2009 Annual Meeting, July 26-28, 2009, Milwaukee, Wisconsin 49270, Agricultural and Applied Economics Association.
  • Handle: RePEc:ags:aaea09:49270
    DOI: 10.22004/ag.econ.49270
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    1. repec:spr:soinre:v:142:y:2019:i:2:d:10.1007_s11205-018-1940-1 is not listed on IDEAS
    2. Yang, Yiwen & Greaney, Theresa M., 2017. "Economic growth and income inequality in the Asia-Pacific region: A comparative study of China, Japan, South Korea, and the United States," Journal of Asian Economics, Elsevier, vol. 48(C), pages 6-22.
    3. Adnen Ben Nasr & Mehmet Balcilar & Seyi Saint Akadiri & Rangan Gupta, 2019. "Kuznets Curve for the US: A Reconsideration Using Cosummability," Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, Springer, vol. 142(2), pages 827-843, April.

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    Community/Rural/Urban Development;

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