An exchange-rate system is a set of contracts which commits central banks to intervene in the foreign-exchange market. The design features of the system include: the rules of intervention, the limits placed on exchange rates and the "crisis scenario" which describes possible transitions to new...

Under different assumptions about the underlying monetary shocks, we study target zones of various widths and the effect they have on variables like the interest differential. The stochastic disturbances assumed are successively a non-zero mean random walk and a mean reverting process. The...