This note presents some properties of the stochastic unit-root processes developed in Granger and Swanson ["Journal of Econometrics" (1997) Vol. 80, pp. 35-62] and Leybourne, McCabe and Tremayne ["Journal of Business & Economic Statistics" (1996) Vol. 14, pp. 435-446] that have not been or only...

Evidence is provided in this article for the existence of a stochastic unit root (STUR) in a proxy for the US risk-free interest rate, in preference to a standard fixed unit root. The implications of the existence of the STUR, on estimating and testing the capital asset pricing model, are also...

A significant increase in the correlation coefficients of returns across countries during periods of high turbulence is regarded as evidence of the contagion of financial crises. However, heteroskedasticity is known to cause correlation coefficients to be biased upward. This note shows that...

This is a corrigendum. We correct the mistakes in Basci and Caner, "Are Real Exchange Rates Nonlinear or Non-stationary? Evidence from a New Threshold Unit Root Test" 2005, vol.9.4, Article 2.

This article estimates common structural breaks among four long-term UK bond yields, which shared a V-shaped trending behaviour during the sample period of 1870 to 1914. By applying the new inference procedure proposed by Qu and Perron (2007) for structural breaks in multivariate regressions, we...

This paper explores some properties of periodically collapsing bubbles, which are a very popular model in the bubbles literature. We first demonstrate that complicated nonlinear bubbles can be represented as a time-varying parameter linear model of order 1. We demonstrate that the bubbles are...

Much interest has been paid recently to the nonlinear cointegrating relations existing among economic variables. Various testing procedures are already available to test for the existence of nonlinear cointegration. For example, Breitung (2001) proposes rank tests and his testing procedure has...

We show, in this study, that the U.S. public debt–GDP ratio was explosive in nature during the 1791–2009 sample period. The huge increase in U.S. debt during World War II is responsible for this result. Our findings differ profoundly from those generated by the standard unit root tests,...

This article reports, confirming evidence for long memory in the return volatility from equity, and foreign exchange markets with the newly proposed increment ratio statistic by Surgailis et al. (2007). The test is robust to changing means, slowly varying trends and other nonstationarities. In...

Nonlinear exponential smooth transition autoregressive (ESTAR) models are recently very popular in modelling the deviation from purchasing power parity. This article, shows that there is a close relation between the ESTAR models estimated in Taylor et al. (2001) and stochastic unit root (STUR)...