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Is the AK model still alive? The long‐run relation between growth and investment re‐examined

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  • Dajin Li

Abstract

To explore the empirical validity of AK‐type endogenous growth models, the long‐run relation between growth and investment is examined. Contrary to Jones’s (1995) findings, the broadly measured rate of investment exerts a long‐run positive effect on the growth rate. This result is supported by evidence from twenty‐four OECD countries, 1950–92, and five major industrialized countries, 1870–1987. The panel‐data evidence from OECD countries also supports an extended AK model based on the Uzawa (1965) / Lucas (1988) two‐sector model with transitional dynamics. These findings suggest that the long‐run relation between growth and investment is consistent the AK model. JEL Classification: O4 Est‐ce que le modèle AK est encore en vie? Un autre coup d’œil sur la relation à long terme entre croissance et investissement. Pour explorer la validité empirique des modèles de croissance endogène de type AK, l’auteur jette un autre coup d’œil sur la relation à long terme entre croissance et investissement. Contrairement à ce que suggèrent les résultats de l’étude de Jones (1995), le taux d’investissement mesuré d’une manière assez compréhensive exerce un effet positif sur le taux de croissance à long terme. Ce résultat est supporté par les données récoltées pour vingt‐quatre pays de l’OCDE entre 1950 et 1992, et pour cinq pays industrialisés importants entre 1870 et 1987. Les résultats tirés des études longitudinales des pays de l’OCDE supportent aussi une version générale du modèle AK fondée sur le modèle à deux secteurs à la Uzawa (1965) / Lucas (1988) avec dynamique de transition. Ces résultats suggèrent que la relation en longue période entre croissance et investissement est consistante avec le modèle AK.

Suggested Citation

  • Dajin Li, 2002. "Is the AK model still alive? The long‐run relation between growth and investment re‐examined," Canadian Journal of Economics/Revue canadienne d'économique, John Wiley & Sons, vol. 35(1), pages 92-114, February.
  • Handle: RePEc:wly:canjec:v:35:y:2002:i:1:p:92-114
    DOI: 10.1111/1540-5982.00122
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    JEL classification:

    • O4 - Economic Development, Innovation, Technological Change, and Growth - - Economic Growth and Aggregate Productivity

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