Recent empirical research by Mark Taylor and coauthors has found evidence of hybrid dynamics for the real exchange rate. While there is a random walk near equilibrium, for real exchange rates some distance from equilibrium there is mean-reversion which increases with the degree of misalignment....

There is growing evidence that the cross section of the growth rate of firms is subject to systematic distortions at business cycle frequencies. In this paper we briefly review this evidence and then offer a theoretical model that incorporates nonlinearities in the way in which firms respond to...