Please use this identifier to cite or link to this item: http://hdl.handle.net/10419/103179
Authors: 
Dräger, Lena
Year of Publication: 
2010
Series/Report no.: 
DEP (Socioeconomics) Discussion Papers, Macroeconomics and Finance Series 2/2010
Abstract: 
Building on the models of sticky information, we endogenize the probability of obtaining new information by introducing a switching mechanism allowing agents to choose between costly rational expectations and costless expectations under sticky information. Thereby, the share of agents with rational expectations becomes endogenous and time-varying. While central results of sticky information models are retained, we find that the share of rational expectations is positively correlated with the variance of the variable forecasted, providing a link to models of near-rationality. Output expectations in our model are generally more rational than inflation expectations, but the share of rational inflation expectations increases with a rising variance of the interest rate. With regard to optimal monetary policy, we find that the Taylor principle provides a necessary and sufficient condition for determinacy of the model. However, output and inflation stability are optimized if the central bank does not react too strongly to inflation, but rather also targets the output gap with a relatively large coefficient in the Taylor rule.
Subjects: 
Endogenous sticky information
heterogeneous expectations
DSGE models
JEL: 
E31
E52
E61
Document Type: 
Working Paper

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