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Capital Mobility in Neoclassical Models of Growth

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  • Robert J. Barro
  • N. Gregory Mankiw
  • Xavier Sala-i-Martin

Abstract

The empirical evidence reveals conditional convergence in the sense that economies grow faster per capita if they start further below their steady-state positions. For a homogeneous group of economies - like the U.S. states, regions of western European countries, and the GECD countries - the convergence is unconditional in that the poor economies grow faster than the rich ones. The neoclassical growth model for a closed economy fits these facts if capital is viewed broadly to encompass human investments, so that diminishing returns to capital set in slowly, and if differences in government policies or preferences about saving lead to heterogeneity in steady-state positions. Yet if the model is opened to allow for full capital mobility, then the predicted rates of convergence for capital and output are much higher than those observed empirically. We show that the open-economy model conforms with the evidence if an economy can use foreign debt to finance only a portion of its capital, even if 50% or more of the total. The problems in using human capital as collateral can explain the required imperfection in the credit market.

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Bibliographic Info

Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 4206.

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Date of creation: Nov 1992
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Publication status: published as The American Economic Review, vol. 85, no. 1, pp. 103-115, (March 1995).
Handle: RePEc:nbr:nberwo:4206

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  1. Robert J. Barro & Xavier Sala-i-Martin, 1991. "Convergence across States and Regions," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 22(1), pages 107-182.
  2. Sergio T. Rebelo, 1990. "Long Run Policy Analysis and Long Run Growth," NBER Working Papers 3325, National Bureau of Economic Research, Inc.
  3. Martin Feldstein & Charles Horioka, 1979. "Domestic Savings and International Capital Flows," NBER Working Papers 0310, National Bureau of Economic Research, Inc.
  4. Daniel Cohen & Jeffrey Sachs, 1985. "Growth and External Debt Under Risk of Debt Repudiation," NBER Working Papers 1703, National Bureau of Economic Research, Inc.
  5. Robert J. Barro, 1989. "Economic Growth in a Cross Section of Countries," NBER Working Papers 3120, National Bureau of Economic Research, Inc.
  6. Susan M. Collins & Won-Am Park, 1989. "External Debt and Macroeconomic Performance in South Korea," NBER Chapters, in: Developing Country Debt and the World Economy, pages 121-140 National Bureau of Economic Research, Inc.
  7. Levine, Ross & Renelt, David, 1992. "A Sensitivity Analysis of Cross-Country Growth Regressions," American Economic Review, American Economic Association, vol. 82(4), pages 942-63, September.
  8. Mulligan, Casey B & Sala-i-Martin, Xavier, 1993. "Transitional Dynamics in Two-Sector Models of Endogenous Growth," The Quarterly Journal of Economics, MIT Press, vol. 108(3), pages 739-73, August.
  9. Robert J. Barro & Xavier Sala-i-Martin, 1992. "Regional Growth and Migration: A Japan-U.S. Comparison," NBER Working Papers 4038, National Bureau of Economic Research, Inc.
  10. Barro, Robert J & Sala-i-Martin, Xavier, 1992. "Convergence," Journal of Political Economy, University of Chicago Press, vol. 100(2), pages 223-51, April.
  11. Mankiw, N Gregory & Romer, David & Weil, David N, 1992. "A Contribution to the Empirics of Economic Growth," The Quarterly Journal of Economics, MIT Press, vol. 107(2), pages 407-37, May.
  12. Tjalling C. Koopmans, 1963. "On the Concept of Optimal Economic Growth," Cowles Foundation Discussion Papers 163, Cowles Foundation for Research in Economics, Yale University.
  13. Paul M. Romer, 1987. "Crazy Explanations for the Productivity Slowdown," NBER Chapters, in: NBER Macroeconomics Annual 1987, Volume 2, pages 163-210 National Bureau of Economic Research, Inc.
  14. Lucas, Robert Jr., 1988. "On the mechanics of economic development," Journal of Monetary Economics, Elsevier, vol. 22(1), pages 3-42, July.
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