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Economics Research International
Volume 2011 (2011), Article ID 986031, 6 pages
Research Article

Empirical Evidence of Economic Bipolarization in Africa

Faculty of Economics and Management, CRES (Economic and Social Research Consortium), UCAD (University Cheikh Anta Diop of Dakar), Rue de Kaolack Angle F, Rond Point de l'OEuf, Point E., C.P. 12023, B.P. 7988, Dakar-Médina, Senegal

Received 9 January 2011; Revised 30 May 2011; Accepted 31 May 2011

Academic Editor: Thanasis Stengos

Copyright © 2011 Mbaye Diene. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper examines the degree of polarization in African countries' per capita GDP distribution between 1966 to 2004. We first use a nonparametric analysis and find that the countries tend to cluster in two classes of per capita GDP. Secondly, by using the Wolfson's bipolarization measure, the results reveal that bipolarization has been accelerating during the two first decades and is still growing. We relate the evolution of polarization during the period to the business sectors. We find that the specialization of the countries is the main factor explaining its evolution, namely, in agriculture and industry sectors.