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The Nonlinearity of the New Keynesian Phillips Curve: The Case of Tunisia

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  • Imen Kobbi

    (Department of Economics, Faculty of economics and Management, University of Sfax, 3026 Sfax, Tunisia)

  • Foued-Badr Gabsi

    (Department of Economics, Faculty of economics and Management, University of Sfax, 3026 Sfax, Tunisia)

Abstract

This article seeks to check the nonlinearity of the Phillips curve in Tunisia for the 1993–2012 period, relying on a hybrid new Keynesian Phillips curve modeled via a Logistic Smooth Transition Regression (LSTR) model with endogenous variables. We estimate this model using the nonlinear instrumental variables. The empirical results corroborate the new Keynesian assumption ofprice rigidity and show that the response of inflation to the output gap tends to be significant only if the inflation rate tends to be relatively high and exceeds a certain threshold. For a low inflation rate, the price rigidity dominates. This result is particularly evident in Tunisia, especially for the years following the 2011 revolution during which the elasticity of inflation rate to an excess demand has become highly important and the inflation rate experienced record levels.

Suggested Citation

  • Imen Kobbi & Foued-Badr Gabsi, 2017. "The Nonlinearity of the New Keynesian Phillips Curve: The Case of Tunisia," Economies, MDPI, vol. 5(3), pages 1-12, July.
    • Handle: RePEc:gam:jecomi:v:5:y:2017:i:3:p:24-:d:103909
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    2. Hamdi Becha & Maha Kalai & Kamel Helali, 2023. "Smooth transition regression model relating inflation to economic growth in Tunisia," Journal of Economic Structures, Springer;Pan-Pacific Association of Input-Output Studies (PAPAIOS), vol. 12(1), pages 1-26, December.
    3. Tarek Kacemi & Sallahuddin Hassan, 2018. "Inflation dynamics analysis in selected MENA countries," Pakistan Journal of Humanities and Social Sciences, International Research Alliance for Sustainable Development (iRASD), vol. 6(2), pages :160-168, June.

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