Heterogeneous Expectations, Exchange Rate Dynamics and Predictability
27 Pages Posted: 4 Feb 2009
Date Written: September 16, 2008
Abstract
This paper proposes a simple chartist-fundamentalist model in which we allow for nonlinear time variation in chartists' extrapolation rate. Estimation of the model using monthly data for the major currencies vis-a-vis the US dollar shows that the model is significant in-sample and that it has out-of-sample predictive power for some of the currencies. We investigate the power of tests used in the literature to detect predictability against the alternative of the proposed model. We find that the short-term unpredictability and the long-term predictability are consistent with the model. The short-term unpredictability might be caused by the presence of weak nonlinearities that are difficult to detect at available sample sizes.
Keywords: Exchange Rates, Heterogeneous Expectations, Forecasting, Nonlinear Models
JEL Classification: F31, C52, C53
Suggested Citation: Suggested Citation
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