TY - JOUR AU - Gourinchas,Pierre-Olivier AU - Tornell,Aaron TI - Exchange Rate Dynamics, Learning and Misperception JF - National Bureau of Economic Research Working Paper Series VL - No. 9391 PY - 2002 Y2 - December 2002 UR - http://www.nber.org/papers/w9391 L1 - http://www.nber.org/papers/w9391.pdf N1 - Author contact info: Pierre-Olivier Gourinchas Department of Economics University of California, Berkeley 530 Evans Hall #3880 Berkeley, CA 94720-3880 Tel: 510/643-0720 Fax: 510/642-6615 E-Mail: pog@econ.berkeley.edu Aaron Tornell Department of Economics UCLA 405 Hilgard Ave, Bunche Hall #8283 Los Angeles, CA 90095-1477 Tel: 310/794-1686 Fax: 310/825-9528 E-Mail: tornell@econ.ucla.edu AB - We propose a new explanation for the forward-premium and the delayed-overshooting puzzles. Both puzzles arise from a systematic under-reaction of short-term interest rate forecasts to current innovations. Accordingly, the forward premium is always a biased predictor of future depreciation; the bias can be so severe as to lead to negative coeffcients in the 'Fama' regression; delayed overshooting may or may not occur depending upon the persistence of interest rate innovations and the degree of under-reaction; lastly, for G-7 countries against the U.S., these puzzles can be rationalized for values of the model's parameters that match empirical estimates ER -