Document Type : Original Research


1 Department of Economics, College of management, Economics and accounting, Tabriz Branch, Islamic Azad University, Tabriz, Iran

2 Department of Economics, College of Management, Economics and Accounting, Tabriz Branch, Islamic Azad University, Tabriz, Iran


This paper investigates the relationship between trade and regional income inequalities in the period 2001-2010 using panel data for 18 selected developing countries. The results show that trade has a significant and negative effect on regional income inequalities, so that an increase of 1 percent of its value, regional income inequalities 0.09 percent decrease. Also, GDP per capita has a negative impact on regional income inequalities in studied countries. However, the population and agriculture value added have a positive
effect on regional income inequalities. It can be said that a 1 percent increase in the variables, respectively, regional income inequalities 0.16 and 0.21 increased.


Acemoglu, D., and Autor. D. (2011). ''Skills, Tasks and Technologies: Implications for Employment and Earnings'', Handbook of Labor Economics 4(B), 1043-1171.
Anderson, E. (2005). ''Openness and inequality in developing countries: A Review of Theory and Recent Evidence''. World Development 33, 1045-1063.
Barro, R. J. (2000). ''Inequality and growth in a panel of countries'', Journal of Economic Growth 5, 5-32.
Bouet, A., Dienesch, E., and Leroy, L. (2012). ''Trade liberalization, urban-rural remittances and income inequalities in Senegal: lessons from a CGE analysis'', 15th Annual Conference on Global Economic Analysis, Geneva, Switzerland, June 2012, 1-14.
Bourguignon, F. and Morrisson C. (1990). ''Income distribution, development and foreign trade'', European Economic Review, 1113-1132.
Calderon, C. and Chong A. (2001). ''External sector and income inequality in interdependent economies using a dynamic panel data approach'', Economics Letters, 71, 225-231.
De Hoyos, R. E. (2013). ''The Effects of Trade Expansion: Poverty and Inequality in Post-NAFTA Mexico'', The Business and Economics Research Journal , Volume 6, Issue 1, 2013, 103-127.
Dollar, D. and Kraay A. (2002). ''Growth is good for the poor'', Journal of Economic Growth, 7, 195-225.
Edwards, S. (1997). ''Trade policy, growth, and income distribution'', American Economic Review Papers and Proceedings, 87, 205-210.
Feenstra, R. C. and Hanson G. (1999). ''The impact of outsourcing and high-technology capital on wages: estimates for the United States'', 1979-1990, Quarterly Journal of Economics, 114, 907-940.
Feenstra, R., and Hanson G. (1996). ''Foreign Investment, Outsourcing and Relative Wages''. Political Economy of Trade Policy: Essays in Honor of Jagdish Bhagwati. Cambridge: MIT Press.
Fischer, R. D. (2001). ''The evolution of inequality after trade liberalization'', Journal of Development Economics, 66, 555-579.
Greene, W. H. (2003). Econometric Analysis, Prentice Hall.
Gujarati, D. 2003. Basic Econometrics, the McGraw-Hill.
Hassoun, N. (2011). ''Free Trade, Poverty, and Inequality'', Carnegie Mellon University, Research Showcase, Department of Philosophy Dietrich College of Humanities and Social Sciences, available: Commons.
Ines Sim David, M. (2011). ''Globalization and Income Inequality in Brazil'', Aarhus School of Business, Aarhus University, Master of Science in International Business.
Krueger, A., (1983). ''Trade and Employment in Developing Countries'', Chicago, University of Chicago Press.
Leamer, E. (1987). ''Paths of development in the three factor, n-good general equilibrium model'', Journal of Political Economy, 95, 961-999.
Li, H., Squire L. and Fu Zou H. (1998). ''Explaining international and intertemporal variations in income inequality'', Economic Journal, 108, 26-43.
Lundberg, M. and Squire L. (2003).''The simultaneous evolution of growth and inequality'', Economic Journal, 113, 326-344.
Meschi, E. and Vivarelli M. (2009). ''Trade and income inequality in developing countries''. World Development 37, 287-302.
Munir, S., Kausar Kiani, A., Khan, A., and Jamal, A. (2013). ''The Relationship between Trade Openness and Income Inequalities: Empirical Evidences from Pakistan'', 3rd International Conference on Business Management, 27-28.
Oloufade, J. D. K. (2012). ''Trade Openness, Conflict Risk and Income Inequality in Developing Countries'', CSAE Conference, Economic Development in Africa, 17th - 19th March 2013, St Catherine's College, Oxford.
Pissarides, C. (1997). ''Learning by trading and the returns to human capital in developing countries''. World Bank Economic Review, 11, 17-32.
Rydzek, B. (2013). ''Trade effects of income inequality within and between countries'', 26th Conference on International Economics, Palma deMallorca, 27 – 28.
Robbins, D. ( 2001). ''Trade Opening and Distribution in Colombia'', Universidad Javeriana.
Spilimbergo, A., Londono J. L. and Szekely M. (1999). ''Income distribution, factor endowments, and trade openness'', Journal of Development Economics, 59, 77-101.
Szekely, M., and Samano, C. (2012). ''Did Trade Openness Affect Income Distribution in Latin America? Evidence for the years 1980–2010'', UNU-WIDER, Working Paper No. 2012/03 January, 1-34.
Tang, P., and Wood, A. (2000). ''Globalization, Co-operation Costs and Wage Inequalities. Unpublished Manuscript. The Hague: Netherlands Planning Bureau; Brighton: Institute of Development Studies.
Torrez Mcmanis, J. (2006). ''Trade’s Effect on Inequality, Revista de Ciencias Sociales'',No.15.
Wood, A. (1994). North-South Trade, Employment and Inequality: Changing Fortunes in a Skill Driven World, Oxford, Clarendon Press.
Wood, A. (2000). Globalization and Wage Inequalities: A Synthesis of Three Theories, Department for International Development, Working Paper.