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Effets d'apprentissage et de rationalisation dans un modèle de croissance cyclique

  • Fabrice Collard

[fre] Effets d'apprentissage et de rationalisation dans un modèle de croissance cyclique Les modèles de croissance endogène se sont principalement attachés à l'étude du long terme sans expliciter la dynamique cyclique de l'économie. On présente ici un modèle de croissance cyclique, dans lequel l'accumulation du capital physique est complétée par une accumulation de capital humain transitant par un effet d'apprentissage et un mécanisme de rationalisation de l'activité productive. Le taux de croissance est alors endogène et conserve la trace des fluctuations conjoncturelles. Le modèle permet donc d'expliciter l'intégration cycle-croissance. En étudiant la dynamique du modèle, on montre que les chocs transitoires exercent un effet permanent dont le signe dépend de l'importance relative des effets d'apprentissage et de rationalisation. On recherche ensuite dans quelle mesure certaines paramétrisations permettent de reproduire les fluctuations observées. [eng] Learning by doing and rationalization effects in a cyclical growth model We present a cyclical growth model, in which the physical capital accumulation is completed by a human capital accumulation through a learning by doing effect and a rationalization of the productive activity mechanism. This modelization allows not to presume a priori the sign of persistance of the shocks. Studying the dynamics, we show that each transitory shock exerts a permanent effect, whose sign relies to the relative magnitude of learning by doing and rationalization. Since the transitory shocks affect the long run dynamics, the model realizes the integration between cycles and growth. We then seek to what extent some parametrization can mimic observed U.S. fluctuations in a encouraging manner.

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File URL: http://www.persee.fr/doc/reco_0035-2764_1994_num_45_3_409577
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Article provided by Programme National Persée in its journal Revue économique.

Volume (Year): 45 (1994)
Issue (Month): 3 ()
Pages: 869-882

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Handle: RePEc:prs:reveco:reco_0035-2764_1994_num_45_3_409577
Contact details of provider: Web page: http://www.persee.fr/collection/reco

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  1. Blanchard, Olivier Jean & Kahn, Charles M, 1980. "The Solution of Linear Difference Models under Rational Expectations," Econometrica, Econometric Society, vol. 48(5), pages 1305-11, July.
  2. Jean-Olivier Hairault, 1992. "Présentation et évaluation du courant des cycles réels," Économie et Prévision, Programme National Persée, vol. 106(5), pages 1-22.
  3. Stadler, George W, 1990. "Business Cycle Models with Endogenous Technology," American Economic Review, American Economic Association, vol. 80(4), pages 763-78, September.
  4. Kenneth J. Arrow, 1962. "The Economic Implications of Learning by Doing," Review of Economic Studies, Oxford University Press, vol. 29(3), pages 155-173.
  5. King, Robert G. & Plosser, Charles I. & Rebelo, Sergio T., 1988. "Production, growth and business cycles : II. New directions," Journal of Monetary Economics, Elsevier, vol. 21(2-3), pages 309-341.
  6. Lucas, Robert Jr., 1988. "On the mechanics of economic development," Journal of Monetary Economics, Elsevier, vol. 22(1), pages 3-42, July.
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