Imperfect Knowledge and Asset Price Dynamics: Modeling the Forecasting of Rational Agents, Dynamic Prospect Theory and Uncertainty Premia on Foreign Exchange
Roman Frydman (Department of Economics, New York University) Michael D. Goldberg (Department of Economics, University of New Hampshire)
Abstract
Models using the Rational Expectations Hypothesis (REH) are widely recognized to be inconsistent with the observed behavior of premia in financial markets, as well as other features of asset price dynamics. Moreover, many reasons have been advanced as to why the REH cannot generally represent, even approximately, the expectations behavior of individually rational agents. In this paper, we develop a new model of the equilibrium premium in the foreign exchange market that replaces the REH with the Imperfect Knowledge Forecasting (IKF) framework. Because we maintain that agents must cope with imperfect knowledge and that they are not grossly irrational, our IKF approach imposes only qualitative conditions on the formation of individual forecasting models and their updating. We also develop a dynamic extension of the original formulation of Kahneman and Tversky’s prospect theory. We find that under IKF and dynamic prospect theory, the equilibrium premium on foreign exchange is positively related to the gap between the aggregate forecast of the exchange rate and its historical benchmark level. We test this implication, using survey data on the German mark-U.S. dollar exchange rate, and find that the behavior of the ex ante premium on foreign exchange is consistent with our model of the premium.
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Paper provided by University of Copenhagen. Department of Economics in its series Discussion Papers with number
03-31.
Length: 62 pages Date of creation: Jun 2003 Date of revision: Handle: RePEc:kud:kuiedp:0331
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De Long, J Bradford & Andrei Shleifer & Lawrence H. Summers & Robert J. Waldmann, 1990.
"Noise Trader Risk in Financial Markets,"
Journal of Political Economy,
University of Chicago Press, vol. 98(4), pages 703-38, August.
[Downloadable!] (restricted)
Other versions:
Barberis, Nicholas & Thaler, Richard, 2003.
"A survey of behavioral finance,"
Handbook of the Economics of Finance,
in: G.M. Constantinides & M. Harris & R. M. Stulz (ed.), Handbook of the Economics of Finance, edition 1, volume 1, chapter 18, pages 1053-1128
Elsevier.
[Downloadable!] (restricted)
Cutler, David M & Poterba, James M & Summers, Lawrence H, 1991.
"Speculative Dynamics,"
Review of Economic Studies,
Blackwell Publishing, vol. 58(3), pages 529-46, May.
[Downloadable!] (restricted)
Other versions:
David M. Cutler & James M. Poterba & Lawrence H. Summers, 1990.
"Speculative Dynamics,"
NBER Working Papers
3242, National Bureau of Economic Research, Inc.
[Downloadable!] (restricted)
Culter, D.M. & Poterba, J.M. & Summers, L.H., 1990.
"Speculative Dynamics,"
Working papers
544, Massachusetts Institute of Technology (MIT), Department of Economics.