Bubbles and Crashes in a Behavioural Finance Model
CESifo Working Paper Series No. 1194
Riksbank Working Paper No. 164/Riksbank Research Paper Series No. 7
45 Pages Posted: 1 Jun 2004
Date Written: May 2004
Abstract
We develop a simple model of the exchange rate in which agents optimize their portfolio and use different forecasting rules. They check the profitability of these rules ex post and select the more profitable one. This model produces two kinds of equilibria, a fundamental and a bubble one. In a stochastic environment the model generates a complex dynamics in which bubbles and crashes occur at unpredictable moments. We contrast these behavioural bubbles with rational bubbles.
Keywords: exchange rate, bounded rationality, heterogeneous agents, bubbles and crashes, complex dynamics
JEL Classification: F31, F41, G10
Suggested Citation: Suggested Citation
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