Main Article Content

Brandon Parsons
Pepperdine University
United States
Shahdad Naghshpour
University of Southern Mississippi
United States
Vol. 12 No. 1 (2023), Articles, pages 79-101
Submitted: Sep 9, 2022 Accepted: Jun 8, 2023 Published: Jun 14, 2023
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The study determines how worsening internal and external conflict affects income inequality. The paper accounts for contributing variables and analyzes panel data in an unbalanced panel of 106 countries from 1988 to 2018—the panel data model groups by development status. The econometric model uses Driscoll and Kraay standard errors to account for heteroscedasticity, cross-sectional dependence, and autocorrelation. Worsening internal conflict increases income inequality in developing countries but not in developed countries. Worsening of internal conflict by one standard deviation increases income inequality by 0.068 in developing counties. External conflict does not noticeably affect income inequality in developed or developing panels. 


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Acemoglu, D., Naidu, S., Restrepo, P., and Robinson, J. (2013). Democracy, redistribution and inequality. National Bureau of Economic Research Working Paper 19746.

Alesina, A., and Perotti, R. (1996). Income distribution, political instability, and investment. European Economic Review, 40(6), 1203-1228.

Ariely, G., and Uslaner, E. (2017). Corruption, fairness, and inequality. International Political Science Review, 38(3), 349-362.

Baltagi, and Badi, H. (2001). Econometric Analysis of Panel Data. Wiley, John and Sons.

Barro, R. (2000). Inequality and growth in panel of countries. Journal of Economic Growth, 5, 5-32.

Barry, B. (2005). Why Social Justice Matters. Cambridge: Polity Press.

Bircan, C., Brück, T. and Vothknecht, M. (2017). Violent conflict and inequality. Oxford Development Studies, 45:2, 125-144.

Buhaug, H., Cederman, L., and Gleditsch, K. S. (2014). Square pegs in round holes: Inequalities, grievances, and civil war. International Studies Quarterly, 58, 418-431.

Burtless, G. (2009). Demographic Transformation and Economic Inequality, ch. 18 in W. Salverda, B. Nolan, and T. M. Smeeding (eds), The Oxford Handbook of Economic Inequality, Oxford, Oxford University Press, 435-454.

Cederman, L., Weidmann, N. B., and Gleditsch, K. S. (2011). Horizontal inequalities and ethnonationalist civil war: A global comparison, American Political Science Review, 105, 478-495.

Collier, P. (1999). On the economic consequences of civil war. Oxford Economic Papers, 51, 168-183.

Collier, P., and Hoeffler, A. (2002). Military expenditure: Threats, aid and arms races (World Bank Policy Research Working Paper No. 2927). Washington, DC: World Bank.

Collier, P., and Hoeffler, A. (2004). Greed and grievance in civil war. Oxford Economic Papers, 56, 563-595.

Collier, P., and Hoeffler, A. (2007). Civil war. In T. Sandler and K. Hartley (Eds.), Handbook of defense economics (pp. 711-739). Elsevier.

Dabla-Norris, E., Kochhar, K., Suphaphiphat, N., Ricka, F. and Tsounta, E. (2015). Causes and Consequences of Income Inequality: A Global Perspective. IMF Staff Discussion Note SDN/15/13. Washington, DC: IMF.

Deininger, K., and Olinto, P. (2000). Asset distribution, inequality, and growth (World Bank Policy Research Working Paper No. 2375). Washington, DC: World Bank.

Deininger, K., and Squire, L. (1996). A new data set measuring income inequality. The World Bank Economic Review. 10(3), 565-591.

Dobson, S., and Ramlogan, C. (2009). Is there an openness Kuznets curve?" Kyklos. 62(2), 226-238.

Dorling, D. (2011). Injustice and the 1%. London and New York, NY: Verso.

Driscoll, J., and Kraay, A. (1998). Consistent covariance matrix estimation with spatially dependent data. Review of Economics and Statistics, 80, 549-560.

Duquette, N. (2018). Inequality and philanthropy: High-income giving in the United States 1917-2012. Explorations in Economic History, 70, 25-41.

Ermisch, J, and Smeeding, T.M. (2012). From Parents to Children: The Intergenerational Transmission of Advantage, New York: Russell Sage Foundation.

Fearon, J. D., and Laitin, D. (2003). Ethnicity, insurgency, and civil war. American Political Science Review, 97, 75-90.

Feenstra, R., Inklaar, R., and Timmer, M. (2015). The next generation of the Penn world table. American Economic Review, 105(10), 3150-3182.

Feierabend, K., and Feierabend, R. (1966). Aggressive behavior within polities. Journal of Conflict Resolution, 10, 249-271.

Furceri, D., and Ostry, J. (2019). Robust determinants of income inequality. Oxford Review of Economic Policy, 35(3), 490-517.

Gurr, R. (1968). A causal model of civil strife: a comparative analysis using new indices. American Political Science Review. 62, 1104-1124.

Haggard, S., and Kaufman, R. (2012). Inequality and regime change: democratic transitions and the stability of democratic rule. American Political Science Review, 106(3), 1-22.

Hardy, M. (1979). Economic growth, distributional inequality, and political conflict in industrial societies. Journal of Political and Military Sociology, 5, 209-227.

Heckscher, E. (1919). The effect of foreign trade on the distribution of income. A translation is provided by H. Flam and M. J. Flanders, eds., Heckscher-Ohlin Trade Theory (Cambridge, MA: MIT Press, 1991). This article originally appeared in Swedish in Ekonomisk Tidskerift, 21, 497-512.

Heston, A., Summers, R., and Aten, B. (2012). Penn World Table Version 7.1. Center for International Comparisons of Production, Income and Prices at the University of Pennsylvania.

Huber, J. (2002). Deliberate discretion? Japanese Journal of Political Science, 4, 157-159.

Huntington, S. (1968). Political Order in Changing Societies. New Haven, CT: Yale Univ. Press.

Kaldor, N. (1957). A model of economic growth. The Economic Journal, 67(268), 591:624.

Karklins, R. (2005). The System Made Me Do It: Corruption in Post-Communist Societies. Armonk, N.Y: M.E. Sharpe.

Knight, J., and. Sabot, R. (1983). Educational Expansion and the Kuznets Effect, American Economic Review. 73 (5), 1132-1136.

Kuznets, S. (1955). Economic growth and income inequality. The American Economic Review, 45(1), 1-28.

Lorenz, O. (1905). Methods of measuring the concentration of wealth. Publications of the American Statistical Association, 9(70), 209-219.

Lundberg, M., and Squire, L. (2003). The simultaneous evolution of growth and inequality. The Economic Journal, 113(487), 326-344.

Milanovic, B. (2016). Global Inequality: A new Approach for the Age of Globalization. Cambridge, MA: Harvard University Press.

Nagel, J. (1974). Inequality and discontent: a nonlinear hypothesis. World Politics. 22, 453-472.

Newey, W., and West, K. (1987). A simple, positive semi-definite, heteroscedasticity and autocorrelation consistent covariance matrix. Econometrica, 55, 703-708.

Ohlin, B. (1933). Interregional and International Trade. Cambridge, MA: Harvard University Press.

Olson, M. (1965). The logic of collective action: Public goods and the theory of groups. Cambridge: Harvard University Press.

Parsons, B. (2023). Panel Data Analysis of the Human Capital Index and Income Inequality. Applied Econometric and International Development, 23(1), 5-32.

Plato. Republic. Books I, II, IV and "The Myth of the Cave: From Book VII." Morality and the Good Life: An Introduction to Ethics through the Classical Sources. 5th ed. Eds. Robert C. Solomon, Clancy W. Martin, and Wayne Vaught. Trans. G.M.A. Grube. Boston: McGraw-Hill, 2009. 81-104.

Posner, R. (1997). Equality, wealth, and political stability. Journal of Law, Economics, and Organizations, 13(2), 344-364.

Pugh, M. (2003). Protectorates and spoils of peace: Political economy in South-East Europe. In D. Jung (Ed.), Shadow globalization, ethnic conflicts and new wars. London: Routledge.

Sahota, G. (1978). Theories of Personal Income Distribution: A Survey. Journal of Economic Literature, 16(1), 1-55.

Solt, F. (2015). Economic inequality and nonviolent protest. Social Science Quarterly, 96(5), 1314-1327.

Stiglitz, Joseph. (2013). The price of inequality. New Perspectives Quarterly. 30(1).

Stolper, W., and Samuelson, P. (1941). Protection and real wages. Review of Economic Studies, 9(1), 58-73.

Tocqueville, A. (1835). Democracy-in America, Volume II. New York: Schocken Books.

United Nations Development Program. (2021). Human Development Report 2020. New York: Oxford Press.

Von Schulze-Gaevernitz, G. (1915). Origins of British Supremacy of the Seas. Current History, 3(3), 560-563.

Weede, E. (1981). Income inequality, average income, and domestic violence. Journal of Conflict Resolution, 25, 639-653.

Young, A. (2013). Inequality, the urban-rural gap, and migration. Quarterly Journal of Economics, 128(4), 1727-1785.