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Equilibrium Efficiency in the Ramsey Model with Habit Formation

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  • Gómez Manuel A.

    (University of A Coruña)

Abstract

This paper analyzes the equilibrium efficiency in a Ramsey model with habit formation. Uniqueness and saddle-path stability of the steady state is proved analytically. The competitive equilibrium is efficient at the steady state. However, the presence of externalities arising from average past consumption renders the competitive equilibrium inefficient off the steady state because agents do not take (fully) into account the indirect effect that consumption has in utility through its influence on habits. The efficient equilibrium can be decentralized by means of a consumption tax that converges to an arbitrary constant value, or by means of an income tax that converges to zero.

Suggested Citation

  • Gómez Manuel A., 2007. "Equilibrium Efficiency in the Ramsey Model with Habit Formation," Studies in Nonlinear Dynamics & Econometrics, De Gruyter, vol. 11(2), pages 1-34, May.
    • Handle: RePEc:bpj:sndecm:v:11:y:2007:i:2:n:2
    DOI: 10.2202/1558-3708.1410
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    Cited by:

    1. Roman Naryshkin & Matt Davison, 2009. "Utility Function and Optimum Consumption in the models with Habit Formation and Catching up with the Joneses," Papers 0909.3655, arXiv.org.
    2. Gómez, Manuel A. & Monteiro, Goncalo, 2015. "Internal habits in an endogenous growth model with elastic labor supply," Economic Modelling, Elsevier, vol. 51(C), pages 583-595.
    3. Hiraguchi, Ryoji, 2011. "A two sector endogenous growth model with habit formation," Journal of Economic Dynamics and Control, Elsevier, vol. 35(4), pages 430-441, April.
    4. Manuel A. Gómez, 2010. "The welfare cost of external habits: a quantitative assessment," Estudios de Economia, University of Chile, Department of Economics, vol. 37(1 Year 20), pages 5-26, June.
    5. Gomez Suarez, Manuel A., 2008. "Utility and production externalities, equilibrium efficiency and leisure specification," Journal of Macroeconomics, Elsevier, vol. 30(4), pages 1496-1519, December.
    6. Wirl Franz & Novak Andreas J. & Hof Franz X., 2008. "Happiness due to Consumption and its Increases, Wealth and Status," Studies in Nonlinear Dynamics & Econometrics, De Gruyter, vol. 12(4), pages 1-34, December.

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