Global Trade Models and Economic Policy Analyses: Relevance, Risks and Repercussions for Africa
Computable general equilibrium (CGE) models are widely used for trade policy analyses and recommendations. Simulation results from these models have also been used as a basis for offering advice to African countries on what positions to take in multilateral trade negotiations. There is however increasing discomfort with the use of these models for policy recommendations, especially in Africa. In this paper we compare the results of several CGE studies that examined the impact of potential Doha Round reforms on Africa and demonstrate that the results differ drastically both in terms of magnitude and direction. Part of the discrepancies in results can be explained by differences in database, model structure, and choice of parameters. Others are, however, difficult to explain because several studies either do not report key assumptions made or do not provide a clear description of how their framework differs from those in the literature. We also show that the modelling approach and the database used in most CGE studies do not take account of key features of African economies that have serious implications for the impact of trade reforms on Africa. Finally, we outline potential consequences of the misuse of CGE models for policy evaluation and suggest pitfalls to avoid if CGE model results are to be taken seriously by policy makers in Africa.
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- Achterbosch, Thom J. & Ben Hammouda, H. & Osakwe, Patrick N. & van Tongeren, Frank W., 2004.
"Trade Liberalisation Under The Doha Development Agenda; Options And Consequences For Africa,"
29104, Agricultural Economics Research Institute.
- Tom Achterbosch & Hakim Ben Hammouda & Patrick Osakwe & Frank van Tongeren, 2004. "Trade liberalisation under the Doha Development Agenda Options and consequences for Africa," International Trade 0407013, EconWPA.
- Douglas C. Lippoldt & Przemyslaw Kowalski, 2005. "Trade Preference Erosion: Expanded Assessment of Countries at Risk of Welfare Losses," OECD Trade Policy Papers 20, OECD Publishing.
- Liu, Jing & Arndt, Channing, 2004.
"Parameter Estimation and Measures of Fit in A Global, General Equilibrium Model,"
Journal of Economic Integration,
Center for Economic Integration, Sejong University, vol. 19, pages 626-649.
- Liu, Jing & Channing Arndt & Thomas Hertel, 2003. "Parameter Estimation and Measures of Fit in A Global, General Equilibrium Model," GTAP Working Papers 1200, Center for Global Trade Analysis, Department of Agricultural Economics, Purdue University.
- Barbara J. Spencer & James A. Brander, 1982. "Tariff Protection and Imperfect Competition," Working Papers 517, Queen's University, Department of Economics.
- Mohamed Hedi Bchir & Yvan Decreux & Jean-Louis Guerin & Sebastien Jean, 2002. "MIRAGE, un modele d'equilibre general calculable pour l'evaluation des politiques commerciales," Economie Internationale, CEPII research center, issue 89-90, pages 109-153.
- Angus Deaton, 1999.
"Commodity Prices and Growth in Africa,"
Journal of Economic Perspectives,
American Economic Association, vol. 13(3), pages 23-40, Summer.
- Kym Anderson & Will Martin & Dominique van der Mensbrugghe, 2006.
"Would Multilateral Trade Reform Benefit Sub-Saharan Africans?,"
Journal of African Economies,
Centre for the Study of African Economies (CSAE), vol. 15(4), pages 626-670, December.
- Anderson, Kym & Martin, Will & van der Mensbrugghe, Dominique, 2005. "Would multilateral trade reform benefit Sub-Saharan Africans?," Policy Research Working Paper Series 3616, The World Bank.
- Anderson, Kym & Martin, Will & van der Mensbrugghe, Dominique, 2005. "Would Multilateral Trade Reform Benefit Sub-Saharan Africans?," CEPR Discussion Papers 5049, C.E.P.R. Discussion Papers.
- Kym Anderson & Will Martin & Dominique van der Mensbrugghe, 2005. "Would Multilateral Trade Reform Benefit Sub-Saharan Africans?," Centre for International Economic Studies Working Papers 2005-18, University of Adelaide, Centre for International Economic Studies.
- Timothy J. Kehoe, 2003.
"An evaluation of the performance of applied general equilibrium models of the impact of NAFTA,"
320, Federal Reserve Bank of Minneapolis.
- Timothy J. Kehoe, 2003. "An Evaluation of the Performance of Applied General Equilibrium Models of the Impact of NAFTA," Levine's Working Paper Archive 506439000000000525, David K. Levine.
- Gene M. Grossman (ed.), 1992. "Imperfect Competition and International Trade," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262570939, March.
- Antoine Bouët & Jean-Christophe Bureau & Yvan Decreux & Sébastien Jean, 2004.
"Multilateral Agricultural Trade Liberalization: The Contrasting Fortunes of Developing Countries in the Doha Round,"
2004-18, CEPII research center.
- Antoine Bouët & Jean-Christophe Bureau & Yvan Decreux & Sébastien Jean, 2005. "Multilateral Agricultural Trade Liberalisation: The Contrasting Fortunes of Developing Countries in the Doha Round," The World Economy, Wiley Blackwell, vol. 28(9), pages 1329-1354, 09.
- Jean-Christophe Bureau & Antoine Bouet, Yvan Decreux, Sébastien Jean, 2005. "Multilateral agricultural trade liberalization: The contrasting fortunes of developing countries in the Doha Round," The Institute for International Integration Studies Discussion Paper Series iiisdp060, IIIS.
- Michael Keen & Thomas Baunsgaard, 2005.
"Tax Revenue and (or?) Trade Liberalization,"
IMF Working Papers
05/112, International Monetary Fund.
- McKitrick, Ross R., 1998. "The econometric critique of computable general equilibrium modeling: the role of functional forms," Economic Modelling, Elsevier, vol. 15(4), pages 543-573, October.
- M. Shahe Emran & Joseph E. Stiglitz, 2002.
"On Selective Indirect Tax Reform in Developing Countries,"
- Emran, M. Shahe & Stiglitz, Joseph E., 2005. "On selective indirect tax reform in developing countries," Journal of Public Economics, Elsevier, vol. 89(4), pages 599-623, April.
- Swamy, Anand V., 1997. "A simple test of the nutrition-based efficiency wage model," Journal of Development Economics, Elsevier, vol. 53(1), pages 85-98, June.
- Valenzuela, Ernesto & Hertel, Thomas & Keeney, Roman & Reimer, Jeff, 2005. "Assessing Global CGE Model Validity Using Agricultural Price Volatility," GTAP Working Papers 1875, Center for Global Trade Analysis, Department of Agricultural Economics, Purdue University.
- Eswaran, Mukesh & Kotwal, Ashok, 1990. "Implications of Credit Constraints for Risk Behaviour in Less Developed Economies," Oxford Economic Papers, Oxford University Press, vol. 42(2), pages 473-82, April.
- Francois, Joseph, 1998. "Scale Economies and Imperfect Competition in the GTAP Model," GTAP Technical Papers 317, Center for Global Trade Analysis, Department of Agricultural Economics, Purdue University.
- Diao, Xinshen & Diaz-Bonilla, Eugenio & Robinson, Sherman & Orden, David, 2005. "Tell me where it hurts, an' I'll tell you who to call," MTID discussion papers 84, International Food Policy Research Institute (IFPRI).
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