While it is widely agreed that Purchasing Power Parity (PPP) holds as a long-run concept the specific dynamic driving the process is largely build upon a priori economic belief rather than a thorough statistical modeling procedure. The two prevailing time series models, i.e. the exponential...

In this paper we introduce a new nonlinear Markov-STAR model to capture both the markov switching and smooth transition dynamics for real exchange rates. The Markov switching part captures the effect of time variations of the equilibrium exchange rates, while the smooth transition part models...

In this paper we propose a simple extension to the panel case of the covariate-augmented Dickey Fuller (CADF) test for unit roots developed in Hansen (1995). The extension we propose is based on a p-values combination approach that takes into account cross-section dependence. We show that the...

On global scale, central banks' holdings of foreign reserves have escalated sharply in recent years. World international reserves holdings have risen significantly from US$1.2 trillion in 1995 to nearly US$10.0 trillion in June 2011. Dominant among these reserves are concentrated in the hands of...

We generalize the portfolio shifts model advanced by Evans and Lyons (2002a; b), and develop the dynamic asymmetric portfolio shifts (DAPS) model by explicitly allowing for possible market under- and overreactions and for asymmetric pricing impacts of order flows. Using the Reuters D2000-1 daily...

We analyse the pattern of daily Euro - US Dollar exchange rates from the birth of Euro in January 1999 to December 2011. We document that also this series is I(1), as is usual for nominal bilateral exchange rates. However, we find evidence of the presence of day effects – even if they play a...

We investigate the persistence of real exchange rates using Bayesian methods. First, an algorithm for Bayesian estimation of nonlinear threshold models is developed. Unlike standard grid-based estimation, the Bayesian approach fully captures joint parameter uncertainty and uncertainty about...

This paper demonstrates that the estimated parameters in previous research, with wrong signs and absurd sizes, do not indicate market inefficiency and market behavior as they appear to. In the real world where forecasting errors are substantially large, a "correct" or an "unreasonable" parameter...

The aim of this paper is to evaluate the economic consequences on the countries that on one hand protect themselves from future financial crises by accumulating international reserves (IR) while on the other hand expose themselves to severe financial crisis due to their excessive internal and/or...