This paper proposes a regression model for analysis of panel count data with the presence of excess zeros relative to a negative binomial distribution, in which the frequency distribution of counts changes according to an underlying two-state Markov chain. Features of the proposed model and...

We examine Granger causality among the exchange rates of eight East Asian economies prior to the Asian crisis. We adopt as our general model Engle and Gau’s (1997) “official band†model, and use daily bilateral US dollar exchange rate data during January 1991-July 1997. Our...

The important concept of purchasing power parity (PPP) has a number of practical implications. Our central objective is to examine the stationarity of Turkey’s real exchange rates to test for the empirical validity of PPP. Our results from conventional univariate unit root tests fail to...