We use a monetary (Dornbusch) model of the exchange rate and introduce speculative dynamics, in which fundamentalists and chartists interact. The resulting non-linearities in the model produce `chaotic' behaviour of the exchange rate. We also analyse the effects of money-stock surprises in such...

Linear models in which exchange rates are driven by stochastic `news' are subject to a number of failings. In this paper we present a non-linear, deterministic model, incorporating concepts from chaos theory, which is capable of producing unpredictable exchange rate movements without `news'. Two...