Evidence on purchasing power parity from univariate models: the case of smooth transition trend‐stationarity
Year: 2005
Type: article
Abstract: Recent research has found that trend‐break unit root tests derived from univariate linear models do not support the hypothesis of long‐run purchasing power parity (PPP) for US dollar real exchange rates. In this paper univariate smooth transition models are utilized to develop unit root tests that allow under the alternative hypothesis for stationarity around a gradually changing deterministic trend function. These tests reveal statistically significant evidence against the null hypothesis of a unit root for the real exchange rates of a number of countries against the US dollar. However, restrictions consistent with long‐run PPP are rejected for some of the countries for which a rejection of the unit root hypothesis is obtained. Copyright © 2005 John Wiley & Sons, Ltd.
Source: Journal of Applied Econometrics
DOI: 10.1002/jae.772
Author: Robert Sollis
Institution: Durham University
Language: English
Domain: Social Sciences
Open Access status: green
OpenAlex ID: W1993613624