Re-examining the real interest rate parity hypothesis under temporary gradual breaks and nonlinear convergence

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Date

2024

Journal Title

Journal ISSN

Volume Title

Publisher

Institute for Ionics

Access Rights

info:eu-repo/semantics/closedAccess

Abstract

This paper investigates the real interest parity hypothesis by testing stationarity of real interest rate differentials for 52 countries with respect to the USA. Taking account of the fact that both asymmetric adjustment and gradual temporary breaks may better characterize the dynamics of real interest rate differentials, we propose a new test that allows for two temporary shifts together with asymmetric adjustment towards the equilibrium. We employ the newly proposed test procedure along with the conventional ADF test as well as nonlinear KSS and OSH tests to examine stationarity of real interest rate differentials. Among the main results, we find that the newly proposed unit root test procedure highly outperforms the existing unit root tests in terms of rejecting the null hypothesis of unit root. Our results suggest that real interest rate differentials can be characterized by a stationary process with asymmetric adjustment around gradual and temporary shifts of mean.

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Keywords

ESTAR Nonlinearity, ESTR Trend, Multiple Smooth Breaks, RIRP

Journal or Series

Portuguese Economic Journal

WoS Q Value

Q1

Scopus Q Value

Q1

Volume

Issue

Citation