Recently, the large T panel literature has emphasized unobserved, time-varying heterogeneity that may stem from omitted common variables or global shocks that affect each individual unit differently. These latent common factors induce cross-section dependence and may lead to inconsistent...

In this paper we explore the dynamics of US dollar excess foreign exchange returns for the G10 currencies and the Swiss franc, 1976-97. The non-linear framework adopted is justified by the results of linearity tests and a parametric bootstrap likelihood ratio statistic which indicate threshold...

A country's intertemporal budget constraint implies current account stationarity or that its saving and investment rates should cointegrate. However, such behaviour may not pertain in finite sample spans where the current account could be subject to persistent shocks. Accordingly, this paper...