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Flexible Fourier unit root test of unemployment for PIIGS countries

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  • Cheng, Shu-Ching
  • Wu, Tsung-pao
  • Lee, Kuei-Chiu
  • Chang, Tsangyao

Abstract

In this empirical study, we apply the flexible Fourier unit root test proposed by Enders and Lee (2012) to re-examine the hysteresis hypothesis of unemployment for PIIGS (Portugal, Ireland, Italy, Greece, and Spain) countries over the period from 1960 to 2011. We find that the Fourier unit root test has greater power than a linear method if the true data generating process of unemployment is a stationarity, non-linear process of an unknown form with structural change. The hysteresis in unemployment is confirmed for all PIIGS countries, with the exception of Portugal and Spain, when the Fourier unit root test is conducted.

Suggested Citation

  • Cheng, Shu-Ching & Wu, Tsung-pao & Lee, Kuei-Chiu & Chang, Tsangyao, 2014. "Flexible Fourier unit root test of unemployment for PIIGS countries," Economic Modelling, Elsevier, vol. 36(C), pages 142-148.
    • Handle: RePEc:eee:ecmode:v:36:y:2014:i:c:p:142-148
    DOI: 10.1016/j.econmod.2013.09.021
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    4. OlaOluwa S. Yaya & Ahamuefula E. Ogbonna & Robert Mudida, 2019. "Hysteresis of unemployment rates in Africa: new findings from Fourier ADF test," Quality & Quantity: International Journal of Methodology, Springer, vol. 53(6), pages 2781-2795, November.
    5. Maynou, Laia & Ordóñez, Javier & Silva, José Ignacio, 2022. "Convergence and determinants of young people not in employment, education or training: An European regional analysis," Economic Modelling, Elsevier, vol. 110(C).
    6. Zarina Oflaz, 2017. "Structural Break, Nonlinearity and the Hysteresis hypothesis: Evidence from new unit root tests," Econometrics Letters, Bilimsel Mektuplar Organizasyonu (Scientific letters), vol. 4(2), pages 1-16.
    7. Saša Obradoviæ & Lela Ristiæ & Nemanja Lojanica, 2018. "Are unemployment rates stationary for SEE10 countries? Evidence from linear and nonlinear dynamics," Zbornik radova Ekonomskog fakulteta u Rijeci/Proceedings of Rijeka Faculty of Economics, University of Rijeka, Faculty of Economics and Business, vol. 36(2), pages 559-583.
    8. Khraief, Naceur & Shahbaz, Muhammad & Heshmati, Almas & Azam, Muhammad, 2020. "Are unemployment rates in OECD countries stationary? Evidence from univariate and panel unit root tests," The North American Journal of Economics and Finance, Elsevier, vol. 51(C).
    9. Dieu Nsenga & Mirada Nach & Hlalefang Khobai & Clement Moyo & Andrew Phiri, 2018. "Is it the natural rate or hysteresis hypothesis for unemployment in Newly Industrialized Economies?," Working Papers 1817, Department of Economics, Nelson Mandela University, revised Apr 2018.
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    12. Tolga Omay & Muhammad Shahbaz & Chris Stewart, 2021. "Is there really hysteresis in the OECD unemployment rates? New evidence using a Fourier panel unit root test," Empirica, Springer;Austrian Institute for Economic Research;Austrian Economic Association, vol. 48(4), pages 875-901, November.
    13. Omay, Tolga & Shahbaz, Muhammad & Stewart, Chris, 2021. "Is There Really Hysteresis in OECD Countries’ Unemployment Rates? New Evidence Using a Fourier Panel Unit Root Test," MPRA Paper 107691, University Library of Munich, Germany, revised 10 May 2021.
    14. Chang, Ming-Jen & Su, Che-Yi, 2015. "Does real interest rate parity really hold? New evidence from G7 countries," Economic Modelling, Elsevier, vol. 47(C), pages 299-306.
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