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The underestimated virtues of the two-sector AK model

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Author Info
Gabriel Felbermayr () (Department of Economics, Johannes Kepler University Linz, Austria)
Omar Licandro

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Abstract

We show that the two-sector version of the AK model proposed by Rebelo (1991) can be read as an endogenous growth extension of Greenwood, Hercowitz and Krusell (1997). By confining constant returns to capital to the investment goods sector, the 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. Whereas Jones (1995) criticizes that the one-sector model fails to reconcile the empirical facts of trending real investment rates and stationary output growth, this incompatibility vanishes in the two-sector version. Finally, a simple technological shock can reproduce the ‘1974’ break in post World War II US data. Thus, AK-type endogenous growth models comply much better with empirical evidence, once they are augmented with a strictly concave consumption sector.

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Paper provided by Department of Economics, Johannes Kepler University Linz, Austria in its series Economics working papers with number 2003-15.

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Date of creation: Dec 2003
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Handle: RePEc:jku:econwp:2003_15

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Related research
Keywords: AK model; embodiment; endogenous growth; obsolescence; ‘1974’;

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Find related papers by JEL classification:
O41 - Economic Development, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - One, Two, and Multisector Growth Models
O30 - Economic Development, Technological Change, and Growth - - Technological Change - - - General

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Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
  1. Raouf Boucekkine & Fernando del Río & Omar Licandro, 2003. "Embodied Technological Change, Learning-by-doing and the Productivity Slowdown," Scandinavian Journal of Economics, Blackwell Publishing, vol. 105(1), pages 87-98, 03. [Downloadable!] (restricted)
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  2. Hsieh, Chang-Tai, 2001. "Endogenous growth and obsolescence," Journal of Development Economics, Elsevier, vol. 66(1), pages 153-171, October. [Downloadable!] (restricted)
  3. Hall, Robert E, 1988. "Intertemporal Substitution in Consumption," Journal of Political Economy, University of Chicago Press, vol. 96(2), pages 339-57, April. [Downloadable!] (restricted)
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  4. Karl Whelan, 2001. "A two-sector approach to modeling U.S. NIPA data," Finance and Economics Discussion Series 2001-04, Board of Governors of the Federal Reserve System (U.S.). [Downloadable!]
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  5. Omar LICANDRO & Javier RUIZ-CASTILLO & Jorge DURAN, 2001. "The Measurement of Growth under Embodied Technical Change," Economics Working Papers ECO2001/14, European University Institute. [Downloadable!]
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  6. Rebelo, Sergio, 1991. "Long-Run Policy Analysis and Long-Run Growth," Journal of Political Economy, University of Chicago Press, vol. 99(3), pages 500-521, June. [Downloadable!] (restricted)
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  7. Ellen R. McGrattan, 1998. "A defense of AK growth models," Quarterly Review, Federal Reserve Bank of Minneapolis, issue Fall, pages 13-27. [Downloadable!]
  8. 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. [Downloadable!] (restricted)
  9. Greenwood, J. & Hercowitz, Z. & Krusell, P., 1995. "Long-Run Implications of Investment-Specific Technological Change," UWO Department of Economics Working Papers 9510, University of Western Ontario, Department of Economics.
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  10. Boucekkine, Raouf & Licandro, Omar & Puch, Luis A. & del Rio, Fernando, 2005. "Vintage capital and the dynamics of the AK model," Journal of Economic Theory, Elsevier, vol. 120(1), pages 39-72, January. [Downloadable!] (restricted)
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  11. 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. [Downloadable!] (restricted)
  12. 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. [Downloadable!] (restricted)
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  13. Raouf BOUCEKKINE & Fernando DEL RIO & Omar LICANDRO, 2002. "Obsolescence and Modernization in the Growth Process," Discussion Papers (IRES - Institut de Recherches Economiques et Sociales) 2002043, Université catholique de Louvain, Institut de Recherches Economiques et Sociales (IRES). [Downloadable!]
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  14. Restuccia, Diego & Urrutia, Carlos, 2001. "Relative prices and investment rates," Journal of Monetary Economics, Elsevier, vol. 47(1), pages 93-121, February. [Downloadable!] (restricted)
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Cited by:
(explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)

  1. 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. [Downloadable!]
  2. Simón Sosvilla Rivero & Oscar Bajo Rubio & Carmen Díaz Roldán, . "Sobre la efectividad de la política regional comunitaria: El caso de Castilla-la Mancha," Working Papers 2003-25, FEDEA. [Downloadable!]
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  3. 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. [Downloadable!]
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  4. Juan Prieto & Juan Gabriel Rodríguez & Rafael Salas, . "Polarization, Inequality and Tax Reforms," Working Papers 2003-23, FEDEA. [Downloadable!]
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