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The underestimated virtues of the two-sector AK model

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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.

Suggested Citation

  • Gabriel Felbermayr & Omar Licandro, 2003. "The underestimated virtues of the two-sector AK model," Economics working papers 2003-15, Department of Economics, Johannes Kepler University Linz, Austria.
    • Handle: RePEc:jku:econwp:2003_15
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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.
    7. Ellen R. McGrattan, 1998. "A defense of AK growth models," Quarterly Review, Federal Reserve Bank of Minneapolis, vol. 22(Fall), pages 13-27.
    8. Hall, Robert E, 1988. "Intertemporal Substitution in Consumption," Journal of Political Economy, University of Chicago Press, vol. 96(2), pages 339-357, April.
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    12. Krusell, Per, 1998. "Investment-Specific R&D and the Decline in the Relative Price of Capital," Journal of Economic Growth, Springer, vol. 3(2), pages 131-141, June.
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    16. 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.
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    Cited by:

    1. Gabriel J. Felbermayr, 2007. "Specialization on a technologically stagnant sector need not be bad for growth," Oxford Economic Papers, Oxford University Press, vol. 59(4), pages 682-701, October.
    2. Barañano, Ilaski & Romero-Ávila, Diego, 2015. "Long-term growth and persistence with obsolescence," Economic Modelling, Elsevier, vol. 51(C), pages 328-339.
    3. Simón Sosvilla Rivero & Oscar Bajo Rubio & Carmen Díaz Roldán, "undated". "Sobre la efectividad de la política regional comunitaria: El caso de Castilla-la Mancha," Studies on the Spanish Economy 178, 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. repec:got:cegedp:24 is not listed on IDEAS
    6. Ejargque, Joao & McKnight, Stephen, 2006. "Can we identify the relative price between consumption and investment?," Economics Discussion Papers 8904, University of Essex, Department of Economics.
    7. 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.
    8. Juan Prieto & Juan Gabriel Rodríguez & Rafael Salas, "undated". "Polarization, Inequality and Tax Reforms," Working Papers 2003-23, FEDEA.

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    More about this item

    Keywords

    AK model; embodiment; endogenous growth; obsolescence; ‘1974’;
    All these keywords.

    JEL classification:

    • O41 - Economic Development, Innovation, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - One, Two, and Multisector Growth Models
    • O30 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - General

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