Further Evidence on the Real Interest Rate Parity Hypothesis in Central and East European Countries: Unit Roots and Nonlinearities

This paper analyzes the empirical fulfillment of the real interest rate parity (RIRP) theory for a pool of central and east European countries. To do so, we apply the recently developed Ng and Perron (2001) unit root tests, which are corrected versions of existing unit root tests, and the Kapetanios et al. (2003) unit root test, which generalizes the alternative hypothesis to the globally stationary smooth transition autoregression model. We find evidence in favor of the empirical fulfillment of RIRP, particularly when taking into account the possibility of nonlinearities in the real interest rate differential.