Why has Growth slowed in Sub-Saharan Africa: A System GMM-IV Approach
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References listed on IDEAS
- Romer, Paul M, 1986.
"Increasing Returns and Long-run Growth,"
Journal of Political Economy, University of Chicago Press, vol. 94(5), pages 1002-1037, October.
- Paul M Romer, 1999. "Increasing Returns and Long-Run Growth," Levine's Working Paper Archive 2232, David K. Levine.
- Venables, Anthony J. & Maloney, William & Kokko, Ari & Bravo Ortega, Claudio & Lederman, Daniel & Rigobón, Roberto & De Gregorio, José & Czelusta, Jesse & Jayasuriya, Shamila A. & Blomström, Magnus & , 2007.
"Natural Resources: Neither Curse nor Destiny,"
IDB Publications (Books),
Inter-American Development Bank, number 350, November.
- Daniel Lederman & William F. Maloney, 2007. "Natural Resources : Neither Curse nor Destiny," World Bank Publications - Books, The World Bank Group, number 7183.
- David E. Bloom & Jeffrey D. Sachs, 1998. "Geography, Demography, and Economic Growth in Africa," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 29(2), pages 207-296.
- Levine, Ross & Renelt, David, 1991. "Cross-country studies of growth and policy : methodological, conceptual, and statistical problems," Policy Research Working Paper Series 608, The World Bank.
- Barry P. Bosworth & Susan M. Collins, 2003. "The Empirics of Growth: An Update," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 34(2), pages 113-206.
- Robert J. Barro, 1991.
"Economic Growth in a Cross Section of Countries,"
The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 106(2), pages 407-443.
- Barro, R.J., 1989. "Economic Growth In A Cross Section Of Countries," RCER Working Papers 201, University of Rochester - Center for Economic Research (RCER).
- Robert J. Barro, 1989. "Economic Growth in a Cross Section of Countries," NBER Working Papers 3120, National Bureau of Economic Research, Inc.
- Marianne Baxter & Robert G. King, 1999.
"Measuring Business Cycles: Approximate Band-Pass Filters For Economic Time Series,"
The Review of Economics and Statistics, MIT Press, vol. 81(4), pages 575-593, November.
- Marianne Baxter & Robert G. King, 1995. "Measuring Business Cycles Approximate Band-Pass Filters for Economic Time Series," NBER Working Papers 5022, National Bureau of Economic Research, Inc.
- Acemoglu, Daron & Johnson, Simon & Robinson, James & Thaicharoen, Yunyong, 2003.
"Institutional causes, macroeconomic symptoms: volatility, crises and growth,"
Journal of Monetary Economics, Elsevier, vol. 50(1), pages 49-123, January.
- Acemoglu, Daron & Johnson, Simon & Robinson, James A. & Thaicharoen, Yunyong, 2002. "Institutional Causes, Macroeconomic Symptoms: Volatility, Crises and Growth," CEPR Discussion Papers 3575, C.E.P.R. Discussion Papers.
- Daron Acemoglu & Simon Johnson & James Robinson & Yunyong Thaicharoen, 2002. "Institutional Causes, Macroeconomic Symptoms: Volatility, Crises and Growth," NBER Working Papers 9124, National Bureau of Economic Research, Inc.
- Acemoglu, Daron & Johnson, Simon & Robinson, James A., 2002. "Institutional Causes, Macroeconomic Symptoms: Volatility, Crises and Growth," CEPR Discussion Papers 3537, C.E.P.R. Discussion Papers.
- repec:bla:scotjp:v:48:y:2001:i:2:p:226-43 is not listed on IDEAS
- N. Gregory Mankiw & David Romer & David N. Weil, 1992.
"A Contribution to the Empirics of Economic Growth,"
The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 107(2), pages 407-437.
- N. Gregory Mankiw & David Romer & David N. Weil, 1990. "A Contribution to the Empirics of Economic Growth," NBER Working Papers 3541, National Bureau of Economic Research, Inc.
- N. Gregory Mankiw & David Romer & David Weil, 1990. "A Contribution to the Empirics of Economic Growth," Working Papers 1990-24, Brown University, Department of Economics.
- Lederman, Daniel & Maloney, William F., 2003. "Trade structure and growth," Policy Research Working Paper Series 3025, The World Bank.
- Jonathan Temple, 2003. "The Long‐Run implications of Growth Theories," Journal of Economic Surveys, Wiley Blackwell, vol. 17(3), pages 497-510, July.
- Stephen P. A. Brown & Mine K. Yücel, 2004. "The effect of high oil prices on today's Texas economy," Southwest Economy, Federal Reserve Bank of Dallas, issue Sep, pages 1-6.
- Romain Wacziarg & Karen Horn Welch, 2008.
"Trade Liberalization and Growth: New Evidence,"
The World Bank Economic Review, World Bank, vol. 22(2), pages 187-231, June.
- Wacziarg, Romain & Welch, Karen Horn, 2003. "Trade Liberalization and Growth: New Evidence," Research Papers 1826, Stanford University, Graduate School of Business.
- Romain Wacziarg & Karen Horn Welch, 2003. "Trade Liberalization and Growth: New Evidence," NBER Working Papers 10152, National Bureau of Economic Research, Inc.
- Blundell, Richard & Bond, Stephen, 1998.
"Initial conditions and moment restrictions in dynamic panel data models,"
Journal of Econometrics, Elsevier, vol. 87(1), pages 115-143, August.
- R Blundell & Steven Bond, "undated". "Initial conditions and moment restrictions in dynamic panel data model," Economics Papers W14&104., Economics Group, Nuffield College, University of Oxford.
- Blundell, R. & Bond, S., 1995. "Initial Conditions and Moment Restrictions in Dynamic Panel Data Models," Economics Papers 104, Economics Group, Nuffield College, University of Oxford.
- Richard Blundell & Stephen Bond, 1995. "Initial conditions and moment restrictions in dynamic panel data models," IFS Working Papers W95/17, Institute for Fiscal Studies.
- Durlauf, Steven N. & Johnson, Paul A. & Temple, Jonathan R.W., 2005.
"Growth Econometrics,"
Handbook of Economic Growth, in: Philippe Aghion & Steven Durlauf (ed.),Handbook of Economic Growth, edition 1, volume 1, chapter 8, pages 555-677,
Elsevier.
- Johnson, Paul & Durlauf, Steven N & Temple, Johnathan R. W., 2004. "Growth Econometrics," Vassar College Department of Economics Working Paper Series 61, Vassar College Department of Economics.
- Durlauf,S.N. & Johnson,P.A. & Temple,J.R.W., 2004. "Growth econometrics," Working papers 18, Wisconsin Madison - Social Systems.
- Benhabib, Jess & Spiegel, Mark M., 1994. "The role of human capital in economic development evidence from aggregate cross-country data," Journal of Monetary Economics, Elsevier, vol. 34(2), pages 143-173, October.
- Norman Loayza & Raimundo Soto, 2002. "The Sources of Economic Growth: An Overview," Central Banking, Analysis, and Economic Policies Book Series, in: Norman Loayza & Raimundo Soto & Norman Loayza (Series Editor) & Klaus Schmidt-Hebbel (Series Editor) (ed.),Economic Growth: Sources, Trends, and Cycles, edition 1, volume 6, chapter 1, pages 001-040, Central Bank of Chile.
- Levine, Ross & Renelt, David, 1992.
"A Sensitivity Analysis of Cross-Country Growth Regressions,"
American Economic Review, American Economic Association, vol. 82(4), pages 942-963, September.
- Levine, Ross & Renelt, David, 1991. "A sensitivity analysis of cross-country growth regressions," Policy Research Working Paper Series 609, The World Bank.
- Durlauf, Steven N., 2001. "Manifesto for a growth econometrics," Journal of Econometrics, Elsevier, vol. 100(1), pages 65-69, January.
- Gallup, John L. & Sachs, Jeffrey D. & Mellinger, Andrew, "undated". "Geography and Economic Development," Instructional Stata datasets for econometrics geodata, Boston College Department of Economics.
- Leamer, Edward E, 1983.
"Let's Take the Con Out of Econometrics,"
American Economic Review, American Economic Association, vol. 73(1), pages 31-43, March.
- Edward E. Leamer, 1982. "Let's Take the Con Out of Econometrics," UCLA Economics Working Papers 239, UCLA Department of Economics.
- Rudger Dornbusch & Ilan Goldfajn & Rodrigo O. Valdés, 1995. "Currency Crises and Collapses," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 26(2), pages 219-294.
- John Luke Gallup & Jeffrey D. Sachs & Andrew D. Mellinger, 1998. "Geography and Economic Development," NBER Working Papers 6849, National Bureau of Economic Research, Inc.
- Caselli, Francesco & Esquivel, Gerardo & Lefort, Fernando, 1996.
"Reopening the Convergence Debate: A New Look at Cross-Country Growth Empirics,"
Journal of Economic Growth, Springer, vol. 1(3), pages 363-389, September.
- Francesco Caselli & Gerardo Esquivel & Fernando Lefort, 1997. "Reopening the Convergence Debate: A New Look at Cross-Country Growth Empirics," Working Papers Central Bank of Chile 03, Central Bank of Chile.
- Galor, Oded, 1996.
"Convergence? Inferences from Theoretical Models,"
Economic Journal, Royal Economic Society, vol. 106(437), pages 1056-1069, July.
- Oded Galor, 1996. "Convergence?: Inferences from Theoretical Models," Working Papers 96-3, Brown University, Department of Economics.
- Galor, Oded, 1996. "Convergence? Inferences from Theoretical Models," CEPR Discussion Papers 1350, C.E.P.R. Discussion Papers.
- Romer, Paul M., 1990.
"Human capital and growth: Theory and evidence,"
Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 32(1), pages 251-286, January.
- Paul M. Romer, 1989. "Human Capital And Growth: Theory and Evidence," NBER Working Papers 3173, National Bureau of Economic Research, Inc.
- Easterly, William, 2001. "The Lost Decades: Developing Countries' Stagnation in Spite of Policy Reform 1980-1998," Journal of Economic Growth, Springer, vol. 6(2), pages 135-157, June.
- Eastwood, R K & Venables, A J, 1982. "The Macroeconomic Implications of a Resource Discovery in an Open Economy," Economic Journal, Royal Economic Society, vol. 92(366), pages 285-299, June.
- Robert M. Solow, 1956. "A Contribution to the Theory of Economic Growth," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 70(1), pages 65-94.
- Barro, Robert J, 1996. "Democracy and Growth," Journal of Economic Growth, Springer, vol. 1(1), pages 1-27, March.
- Bernard, Andrew B. & Durlauf, Steven N., 1996.
"Interpreting tests of the convergence hypothesis,"
Journal of Econometrics, Elsevier, vol. 71(1-2), pages 161-173.
- Bernard, A.B. & Durlauf, S.N., 1994. "Interpreting Tests of the Convergence Hypothesis," Working papers 9401r, Wisconsin Madison - Social Systems.
- Andrew B. Bernard & Steven N. Durlauf, 1994. "Interpreting Tests of the Convergence Hypothesis," NBER Technical Working Papers 0159, National Bureau of Economic Research, Inc.
- T. W. Swan, 1956. "ECONOMIC GROWTH and CAPITAL ACCUMULATION," The Economic Record, The Economic Society of Australia, vol. 32(2), pages 334-361, November.
- Paul Collier & Jan Willem Gunning, 1999. "Why Has Africa Grown Slowly?," Journal of Economic Perspectives, American Economic Association, vol. 13(3), pages 3-22, Summer.
- Arellano, Manuel & Bover, Olympia, 1995.
"Another look at the instrumental variable estimation of error-components models,"
Journal of Econometrics, Elsevier, vol. 68(1), pages 29-51, July.
- M Arellano & O Bover, 1990. "Another Look at the Instrumental Variable Estimation of Error-Components Models," CEP Discussion Papers dp0007, Centre for Economic Performance, LSE.
- Lucas, Robert Jr., 1988. "On the mechanics of economic development," Journal of Monetary Economics, Elsevier, vol. 22(1), pages 3-42, July.
- Dollar, David & Kraay, Aart, 2002.
"Growth Is Good for the Poor,"
Journal of Economic Growth, Springer, vol. 7(3), pages 195-225, September.
- Dollar, David & Kraay, Aart, 2001. "Growth is good for the poor," Policy Research Working Paper Series 2587, The World Bank.
- Arellano, Manuel, 2003. "Panel Data Econometrics," OUP Catalogue, Oxford University Press, number 9780199245291.
- Ms. Rina Bhattacharya & Tarik Yousef & Mr. Pierre Dhonte, 2000. "Demographic Transition in the Middle East: Implications for Growth, Employment, and Housing," IMF Working Papers 2000/041, International Monetary Fund.
- repec:bla:ecorec:v:78:y:2002:i:243:p:375-80 is not listed on IDEAS
- Bliss, Christopher, 1999. "Galton's Fallacy and Economic Convergence," Oxford Economic Papers, Oxford University Press, vol. 51(1), pages 4-14, January.
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Cited by:
- Eleftherios Goulas & Athina Zervoyianni, 2013. "Growth, Deficits and Uncertainty: Theoretical Aspects and Empirical Evidence," Working Paper series 53_13, Rimini Centre for Economic Analysis.
- Goulas, Eleftherios & Zervoyianni, Athina, 2013. "Growth, deficits and uncertainty: Theoretical aspects and empirical evidence from a panel of 27 countries," The Quarterly Review of Economics and Finance, Elsevier, vol. 53(4), pages 380-392.
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More about this item
Keywords
Fixed Effects Models; Economic Growth; Endogeneity; Method of Moments;All these keywords.
JEL classification:
- E13 - Macroeconomics and Monetary Economics - - General Aggregative Models - - - Neoclassical
- C33 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Models with Panel Data; Spatio-temporal Models
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