We present a novel GARCH model that accounts for time varying, state dependent, persistence in the volatility dynamics. The proposed model generalizes the component GARCH model of Ding and Granger (1996). The volatility is modelled as a convex combination of unobserved GARCH components where the...

The half-life of deviations from purchasing power parity (PPP) plays a central role in the ongoing debate about the ability of macroeconomic models to account for the time series behaviour of the real exchange rate. The main contribution of this paper is a general framework in which alternative...

We estimate inequality including Gini coefficients using a lognormal parametric model for an investigation of persistent inequality. The asymptotic theory of selected order statistics enables us to construct a linear model based on grouped data. We extend the linear model to a dynamic model in...

The study has as its objectives, to determine the influence of price volatility and price expectation in the rate of inflation as a measure of the price level. In addition, the study sought to evaluate ipso facto the extent to which monetary policy has influenced inflation by reducing price...

The Taylor hypothesis is the conjecture that the 2007-2009 financial crisis and the 2008-present downturn have been caused by loose monetary policy during 2002-2006. According to the Taylor hypothesis the Fed deviated from well-know rules of monetary policy-making over this period, and this...