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Nonlinear Cointegration Analysis and the Environmental Kuznets Curve

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  • Hong, Seung Hyun

    (Department of Economics, Concordia University, Montreal, Quebec, Canada)

  • Wagner, Martin

    (Department of Economics and Finance, Institute for Advanced Studies, Vienna, Austria)

Abstract

Recent years have seen a growing literature on the environmental Kuznets curve (EKC) that resorts in a large part to cointegration techniques. The EKC literature has failed to acknowledge that such regressions involve unit root nonstationary regressors and their integer powers (e.g. GDP and GDP squared), which behave differently from linear cointegrating regressions. Here we provide the necessary tools for EKC analysis by deriving estimation and testing theory for cointegrating equations including stationary regressors, deterministic regressors, unit root nonstationary regressors and their integer powers. We consider fully modified OLS estimation, specification tests based on augmented and auxiliary regressions, as well as a sub-sample KPSS type cointegration test. We present simulation results illustrating the performance of the estimators and tests. In the empirical application for CO2 and SO2 emissions for 19 early industrialized countries over the period 1870-2000 we find evidence for an EKC in roughly half of the countries.

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File URL: http://www.ihs.ac.at/publications/eco/es-224.pdf
File Function: First version, 2008
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Bibliographic Info

Paper provided by Institute for Advanced Studies in its series Economics Series with number 224.

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Length: 53 pages
Date of creation: Jul 2008
Date of revision:
Handle: RePEc:ihs:ihsesp:224

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Related research

Keywords: Integrated process; Nonlinear transformation; Fully modified estimation; Nonlinear cointegration analysis; Environmental Kuznets curve;

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As found by EconAcademics.org, the blog aggregator for Economics research:
  1. Tests for Non-Linear Cointegration
    by David Stern in Stochastic Trend on 2010-10-22 03:19:00

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