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INVESTIGATING THE VALIDITY OF THE PURCHASING POWER PARITY HYPOTHESIS: THE CASE OF TÜRKİYE

Cilt: 27 Sayı: 1 26 Ocak 2026
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INVESTIGATING THE VALIDITY OF THE PURCHASING POWER PARITY HYPOTHESIS: THE CASE OF TÜRKİYE

Abstract

This study aims to test the validity of the Purchasing Power Parity (PPP) hypothesis for Türkiye using monthly data for the period February 2001-July 2024. To this end, the Augmented Dickey-Fuller (ADF) test, a conventional unit root test, and the Fractional Frequency Fourier ADF (FFFADF) test, which can take into account multiple nonlinear structural breaks, are applied. In the analysis, CPI- and D-PPI-based Real Effective Exchange Rates (REERs) as well as CPI-adjusted REER variables for developing and developed countries are analyzed separately. The ADF unit root tests do not provide consistent results on the validity of the PPP hypothesis in Türkiye in the relevant period. Since the ADF test ignores structural breaks, the FFFADF unit root test, which is a more advanced technique, is used to test the validity of the PPP hypothesis with stronger evidence. The FFFADF unit root test results reveal that the PPP hypothesis is valid only for the CPI-based and CPI developed countries-based REER definitions in Türkiye during the analyzed period. This finding implies that the applicability of PPP is highly conditional on the price index and trading partner group used. This concrete and most important impact for the Turkish economy is that the long-run stabilizing feature of the REER supports the effectiveness of the Inflation Targeting Regime, allowing the Central Bank to focus on other policy instruments in the fight against inflation.

Keywords

Kaynakça

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Ayrıntılar

Birincil Dil

İngilizce

Konular

Uygulamalı Makro Ekonometri

Bölüm

Araştırma Makalesi

Yayımlanma Tarihi

26 Ocak 2026

Gönderilme Tarihi

23 Temmuz 2025

Kabul Tarihi

26 Kasım 2025

Yayımlandığı Sayı

Yıl 2026 Cilt: 27 Sayı: 1

Kaynak Göster

APA
Yağmur, İ. (2026). INVESTIGATING THE VALIDITY OF THE PURCHASING POWER PARITY HYPOTHESIS: THE CASE OF TÜRKİYE. Cumhuriyet Üniversitesi İktisadi ve İdari Bilimler Dergisi, 27(1), 38-53. https://doi.org/10.37880/cumuiibf.1749539

Cited By

Cumhuriyet Üniversitesi İktisadi ve İdari Bilimler Dergisi Creative Commons Atıf-GayriTicari 4.0 Uluslararası Lisansı (CC BY NC) ile lisanslanmıştır.