Revisiting purchasing power parity for major OPEC countries: evidence based on nonlinear panel unit-root tests

Hsu-Ling Chang and Chi-Wei Su

Applied Economics Letters, 2010, vol. 17, issue 11, 1119-1123

Abstract: In this study, we apply nonlinear panel unit-root test to assess the nonstationary properties of the real exchange rate for seven major Organization of the Petroleum Exporting Countries (OPEC). We find that nonlinear panel unit-root test has higher power than linear method suggested by Breuer et al. (2001) if the true data generating process of exchange rate is in fact a stationary nonlinear process. We re-examine the validity of Purchasing Power Parity (PPP) from the panel nonlinear point of view and provide robust evidence clearly indicating that PPP holds true for four countries, namely Angola, Indonesia, Iran and Saudi Arabia. Our findings point out their exchange rate adjustment is mean reversion towards PPP equilibrium values in a nonlinear way.

Date: 2010
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Persistent link: https://EconPapers.repec.org/RePEc:taf:apeclt:v:17:y:2010:i:11:p:1119-1123

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DOI: 10.1080/00036840902817565

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