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Dualism and macroeconomic volatility

  • Piketty, Thomas
  • Banerjee, Abhijit
  • Aghion, Philippe

This paper develops a simple macroeconomic model that shows that combining capital market imperfections together with unequal access to investment opportunities across individuals can generate endogenous and permanent fluctuations in aggregate GDP, investment, and interest rates. Reducing inequality of access may be a necessary condition for macroeconomic stabilization. Moreover, countercyclical fiscal policies have a role to play: in our model savings are underutilized in slumps because of the limited debt capacity of potential investors. Therefore, the government should issue public debt during recessions in order to absorb those idle savings and finance investment subsidies or tax cuts for investors. © 2000 the President and Fellows of Harvard College and the Massachusetts Institute of Technology

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Paper provided by CEPREMAP in its series CEPREMAP Working Papers (Couverture Orange) with number 9720.

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Length: 46 pages
Date of creation: 1997
Date of revision:
Handle: RePEc:cpm:cepmap:9720
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  1. Xavier Freixas & Jean-Charles Rochet, 1997. "Microeconomics of Banking," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262061937, June.
  2. Martin Feldstein & Charles Horioka, 1979. "Domestic Savings and International Capital Flows," NBER Working Papers 0310, National Bureau of Economic Research, Inc.
  3. Galor, Oded & Zeira, Joseph, 1988. "Income Distribution and Macroeconomics," MPRA Paper 51644, University Library of Munich, Germany, revised 01 Sep 1989.
  4. Bernanke, Ben S. & Gertler, Mark & Gilchrist, Simon, 1999. "The financial accelerator in a quantitative business cycle framework," Handbook of Macroeconomics, in: J. B. Taylor & M. Woodford (ed.), Handbook of Macroeconomics, edition 1, volume 1, chapter 21, pages 1341-1393 Elsevier.
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