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The Under-Estimated Virtues of the Two-Sector AK Model

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  • Gabriel J. FELBERMAYR
  • Omar LICANDRO

Abstract

This paper analyzes some unnoticed predictions of the two-sector AK model in line with the recent literature on embodied technical change. Firstly, by confining constant returns to capital to the investment sector, the AK model generates endogenously the secular downward trend of the relative price of equipment investment and the rising real investment rate observed in US NIPA data. Secondly, Jones' (1995) claim that the AK model fails to reconcile the empirical facts of trending real investment rates and stationary output growth vanishes in the two-sector version. Thirdly, consistent with the evidence from cross-country studies, the model predicts a negative relation between GDP per capita and the relative price of equipment. Hence, in spite of its overly simplistic structure, the two-sector AK model provides important intuition on the implications of a trending relative price of equipment investment in endogenous growth environments.

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Bibliographic Info

Paper provided by European University Institute in its series Economics Working Papers with number ECO2002/27.

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Date of creation: 2002
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Handle: RePEc:eui:euiwps:eco2002/27

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  1. Sergio T. Rebelo, 1992. "Long Run Policy Analysis and Long Run Growth," NBER Working Papers 3325, National Bureau of Economic Research, Inc.
  2. Dajin Li, 2002. "Is the AK model still alive? The long-run relation between growth and investment re-examined," Canadian Journal of Economics, Canadian Economics Association, vol. 35(1), pages 92-114, February.
  3. Restuccia, Diego & Urrutia, Carlos, 2001. "Relative prices and investment rates," Journal of Monetary Economics, Elsevier, vol. 47(1), pages 93-121, February.
  4. Hall, Robert E, 1988. "Intertemporal Substitution in Consumption," Journal of Political Economy, University of Chicago Press, vol. 96(2), pages 339-57, April.
  5. Greenwood, Jeremy & Hercowitz, Zvi & Krusell, Per, 1997. "Long-Run Implications of Investment-Specific Technological Change," American Economic Review, American Economic Association, vol. 87(3), pages 342-62, June.
  6. Masao Ogaki & Carmen M. Reinhart, 1998. "Measuring Intertemporal Substitution: The Role of Durable Goods," Journal of Political Economy, University of Chicago Press, vol. 106(5), pages 1078-1098, October.
  7. Sharon G. Harrison, 2003. "Returns to Scale and Externalities in the Consumption and Investment Sectors," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 6(4), pages 963-976, October.
  8. Hsieh, Chang-Tai, 2001. "Endogenous growth and obsolescence," Journal of Development Economics, Elsevier, vol. 66(1), pages 153-171, October.
  9. Jones, Charles I, 1995. "Time Series Tests of Endogenous Growth Models," The Quarterly Journal of Economics, MIT Press, vol. 110(2), pages 495-525, May.
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Cited by:
  1. Gabriel Felbermayr, 2004. "Specialization on a technologically atagnant aector need not be bad for growth," Economics working papers 2004-02, Department of Economics, Johannes Kepler University Linz, Austria.
  2. Jorge Duran & Omar Licandro, 2013. "Is the GDP growth rate in NIPA a welfare measure?," 2013 Meeting Papers 191, Society for Economic Dynamics.
  3. Juan Prieto & Juan Gabriel Rodríguez & Rafael Salas, . "Polarization, Inequality and Tax Reforms," Working Papers 2003-23, FEDEA.
  4. Ana Balcao Reis & Joao Ejarque, 2005. "(Relative Price) Lessons from Taking an AK Model to the Data," 2005 Meeting Papers 312, Society for Economic Dynamics.
  5. Joao Ejarque & Stephen McKnight, 2006. "Can we identify the relative price between consumption and investment?," Economics Discussion Papers 615, University of Essex, Department of Economics.
  6. D'Alessandro, Simone & Salvadori, Neri, 2008. "Pasinetti versus Rebelo: Two different models or just one?," Journal of Economic Behavior & Organization, Elsevier, vol. 65(3-4), pages 547-554, March.

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