Purchasing power parity hypothesis: New empirical evidence from nonlinear panel unit root tests
Date
2014
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Open Access Color
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Abstract
Bu çalışmanın amacı İktisadi İşbirliği ve Gelişme Teşkilatındaki bir grup ülke için Satın alma Gücü Paritesi (SGP) hipotezini yeniden değerlendirerek kapsamlı bir analiz sunmaktır. Bu amaçla 1990 ve 2013 yılları arasında aylık verilerle bir sürü birim kök testi sınanmıştır. Bu çalışmada geleneksel tek değişkenli ve panel birim kök testlerinin yanında doğrusal olmayan birim kök testleri de uygulanmıştır. Ama bu çalışmadaki sonuçlara göre, SGP hipotezi İktisadi İşbirliği ve Gelişme Teşkilatı ülkeleri için geçerli değildir. SGP hipotezi en çok destekleyen test, doğrusal panel birim kök testleri iken, en az destekleyen ise doğrusal tek değişkenli birim kök testleridir. Doğrusal olmayan birim kök testlerinin sonuçları da ümit vericidir. Böylece, SGP hipotezinin geçerliliği hala çözülemeyen bir sorun olarak kalmaktadır.
The purpose of this thesis is to provide a comprehensive analysis of the Purchasing Power Parity (PPP) hypothesis by re-examining its validity for a group of Organization for Economic Co-operation and Development (OECD) countries. To this end, we tested this theory by using a battery of unit root tests by using monthly data for the period 1990 to 2013. The unit root tests implemented in this study includes not only the conventional univariate and panel unit root tests but also their nonlinear counterparts. However, all results in general emphasize that the PPP hypothesis does not hold for the OECD countries included in this study. While the PPP hypothesis founds most support when the linear panel unit root tests are implemented, strong unfavorable evidence exists by using the linear univariate unit root tests. The results of the nonlinear unit root tests seem also promising. Thus, the validity of the PPP hypothesis still remains an unsolved question.
The purpose of this thesis is to provide a comprehensive analysis of the Purchasing Power Parity (PPP) hypothesis by re-examining its validity for a group of Organization for Economic Co-operation and Development (OECD) countries. To this end, we tested this theory by using a battery of unit root tests by using monthly data for the period 1990 to 2013. The unit root tests implemented in this study includes not only the conventional univariate and panel unit root tests but also their nonlinear counterparts. However, all results in general emphasize that the PPP hypothesis does not hold for the OECD countries included in this study. While the PPP hypothesis founds most support when the linear panel unit root tests are implemented, strong unfavorable evidence exists by using the linear univariate unit root tests. The results of the nonlinear unit root tests seem also promising. Thus, the validity of the PPP hypothesis still remains an unsolved question.
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Keywords
PPP, Unit Root Test, Nonlinear Unit Root Tests, Satın Alma Gücü Paritesi, Doğrusal Olmayan Birim Kök Testleri, Birim Kök Testi
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Citation
Özdamarlar, D. (2014). Purchasing power parity hypothesis: New empirical evidence from nonlinear panel unit root tests. Yayımlanmamış yüksek lisans tezi. Ankara. Çankaya Üniversitesi Sosyal Bilimler Enstitüsü.
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1
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88