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Corresponding Author:
Emmanuel Anoruo, Department of Accounting and Management Information Systems, Coppin State University, Baltimore, Mariland USA

Testing for Convergence in per capita Income within ECOWAS

Volume 72 - Issue 4, November 2019
(pp. 493-512)
JEL classification: F36, P44, P45
Keywords: Income Convergence, Convergence Club, ECOWAS, Dip-Test

Abstract

This paper tests for convergence in per capita income among ECOWAS member states. In particular, this paper applies the panel convergence procedure which has the ability to endogenously determine the existence of full convergence and convergence clubs. The study used the dip-test to check the robustness of the results from the panel convergence tests. To gain a better understanding of the issue of per capita income convergence within the community, the study is undertaken in three different time frames including the full, pre- and post-ECOWAS sample periods. The results reject the null hypothesis of full convergence in per capita income among ECOWAS member states during the full and two subsample periods. These results indicate that all of the countries have not converged to a single equilibrium state. However, the results did provide evidence of convergence clubs within ECOWAS member states during the full and two subsample periods. The results from the dip-test corroborate those from the panel convergence test in the sense that the null of hypothesis of full convergence is rejected. The failure to find evidence of full convergence highlights the need for ECOWAS member states to embark on more proactive economic policy coordination, especially in the areas of trade, fiscal and monetary policies.


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Bibliography

Aghion, P. and P. Howitt (1992), “A Model of Growth through Creative Destruction”, Econometrica, 60(2), 323-351.
Barro, R.J. and X. Sala-i-Martin (1990), “Convergence across States and Regions”, Brookings Papers on Economic Activities, 1, 107-182.
Barro, R.J. and X. Sala-i-Martin (1992), “Convergence”, Journal of Political Economy, 100, (2), 223-251.
Barro, R. and X. Sala-i-Martin (1995), Economic Growth, McGraw-Hill, Inc.
Bernard, A.B. and S.N. Durlauf (1996), “Interpreting Tests of the Convergence Hypothesis”, Journal of Econometrics, 71(1-2), 161-173.
Bunyaratavej, K. and E. Hahn (2005), “An Integrative Approach to Measuring Economic Convergence: The Case of the European Union”, Global Economy Journal, 5(2), Article 8.
Camarero, M., R. Flores and C. Tamarit (2006), “Monetary Union and Productivity Differences in Mercosur Countries”, Journal of Policy Modelling, 28(1), 53-66.
Carmignani, F. (2007), “A Note on Income Converge Effects in Regional Integration Agreements”, Economics Letters, 94(3), 361-366. 
Caselli, F., G. Esquivel and F. Lefort (1996), “Reopening the Convergence Debate: A New Look at Cross-Country Growth Empirics”, Journal of Economic Growth, 1(3), 363-389.
Cheung, Y. and A. Pascual (2004), “Testing for Output Convergence: A Re-Examination”, Oxford Economic Papers, 56(1), 45-63.
Chowdhury, K. (2005a), “What's Happening to Per capita GDP in the ASEAN Countries? An Analysis of Convergence, 1960-2001”, Applied Econometrics and International Development, 5(3) 49-68.
Chowdhury, K. (2005b), “Convergence of Per capita GDP in South Asia”, International Journal of Applied Business and Economic Research, 3(2), 133-150.
Dowrick, S. and D-T. Nguyen (1989), “OECD Comparative Economic Growth 1950-85: Catch-Up and Convergence”, American Economic Review, 79(5), 1010-1030.
Feenstra, R.C., R. Inklaar and M.P. Timmer (2015), “The Next Generation of the Penn World Table”, American Economic Review, 105(10), 3150-3182, available for download at <www.ggdc.net/pwt>, accessed October 10, 2018.
Ghura, D. and M. Hadjimichael (1996), “Growth in Sub-Saharan Africa”, IMF Staff Papers, 43(3), 605-634.
Grossman, G. and E. Helpman (1991), Innovation and Growth in the Global Economy, MIT Press: Cambridge, MA.
Hartigan, J.A. and P.M. Hartigan (1985), “The Dip Test of Unimodality”, Annals of Statistics, 13(1), 70-84.
Heng, T. and T. Siang (1999), “A Neoclassical Analysis of the ASEAN and East Asian Growth Experience”, ASEAN Economic Bulletin, 16(2), 149-165.
Hodrick, R. and E. Prescott (1997), “Postwar U.S. Business Cycles: An Empirical Investigation”, Journal of Money, Credit, and Banking, 29(1), 1-16.
Holmes, M.J. (2005a), “New Evidence on Long-Run Output Convergence among Latin American Countries”, Journal of Applied Economics, 8(2), 299-319.
Holmes, M.J. (2005b), “Is Long-Run Output Convergence Associated with International Co-operation? Some New Evidence for Selected African Countries”, Journal of Economic Development, 30 (2), 67-85.
Im, K.S., M.H. Pesaran and Y. Shin (2003), “Testing for Unit Roots in Heterogeneous Panels”, Journal of Econometrics, 115(1), 53-74.
Islam, N. (1995), “Growth Empirics: A Panel Data Approach”, Quarterly Journal of Economics, 110(4), 1127-1170.
Jones, B. (2002), “Economic Integration and Convergence of Per capita Income in West Africa”, African Development Review, 14(1), 18-47.
King, A. and C. Ramlogan-Dobson (2014), “Are Income Differences within the OECD Diminishing? Evidence from Fourier Unit Root Tests”, Studies in Nonlinear Dynamics and Econometrics, 18(2), 185-199.
King, A. and C. Ramlogan-Dobson (2015), “International Income Convergence: Is Latin America actually Different?”, Economic Modelling, 49, 212-222.
Mankiw, N.G., D. Romer and D.N. Weil (1992), “A Contribution to the Empirics of Economic Growth”, Quarterly Journal of Economics, 107, 407-437.
McCoskey, S. (2002), “Convergence in Sub-Saharan Africa: A Nonstationary Panel Data Approach”, Applied Economics, 34(7), 819-829.
Phillips, P.C.B. and D. Sul (2007a), “Transition Modelling and Econometric Convergence Tests”, Econometrica, 75(6), 1771-1855.
Ranjbar, O., C-C. Lee, T. Chang and M-P. Chen (2014), “Income Convergence in African Countries: Evidence from a Stationary Test with Multiple Structural Breaks”, South African Journal of Economics, 82(3), 371-391.
Robson, P. (1983), “Integration, Development and Equity”, George Allen and Unwin: London.
Romer, P. (1990), “Endogenous Technical Change”, Journal of Political Economy, 98(5), 71-102.
Revised Treaty of the Economic Community of West African States (ECOWAS), available online at <http://www.ecowas.int/wp-content/uploads/2015/01/Revised-treaty.pdf>, accessed October 20, 2018.
Sala-i-Martin, X. (1996), “The Classical Approach to Convergence Analysis”, Economic Journal, 106(437), 1019-1036.
Sohn, C-H. and H. Lee (2006), “How FTAs Affect Income Levels of Member Countries”, The World Economy, 29(12), 1737-1757.
Solow, R. (1956), “A Contribution to the Theory of Economic Growth”, Quarterly Journal of Economics, 70(1), 65-94.
Swan, T. (1956), “Economic Growth and Capital Accumulation”, Economic Record, 32(2), 334-361.
Treaty of the Economic Community of West African States (ECOWAS),  available online at <http://www.ecowas.int/ecowas-law/treaties/>, accessed October 20, 2018.
Udah, E.B. and M.O. Nyong (2011), “Economic Integration in ECOWAS and Prospects for Convergence in Real Per capita Income”, British Journal of Humanities and Social Sciences, 3(1), 28-45.
Wang, M.S. (2012), “Income Convergence within ASEAN, ASEAN+3: A Panel Unit Root Approach”, Applied Economics Letters, 19(5), 417-423.
Yilanci, V., E. Saridoğan and O. Artar (2014), “A Stochastic Convergence Analysis for Selected East Asian and Pacific Countries: A Fourier Unit Root Test Approach”, Theoretical and Applied Economics, 21(9), 51-60.
 

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Institute for International Economics
of the Genoa Chamber of Commerce


Istituto di Economia Internazionale
Camera di Commercio di Genova
Via Garibaldi, 4 (III piano) - 16124 Genova (Italy)
www.ge.camcom.gov.it