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Why don't people pay attention? Endogenous Sticky Information in a DSGE Model

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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 the 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.

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Paper provided by KOF Swiss Economic Institute, ETH Zurich in its series KOF Working papers with number 10-260.

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Length: 51 pages
Date of creation: Jul 2010
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Handle: RePEc:kof:wpskof:10-260

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Keywords: Endogenous sticky information; heterogeneous expectations; DSGE models;

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  1. Michael J. Lamla & Sarah M. Lein & Jan-Egbert Sturm, 2007. "News and Sectoral Comovement," KOF Working papers, KOF Swiss Economic Institute, ETH Zurich 07-183, KOF Swiss Economic Institute, ETH Zurich.
  2. Meyer-Gohde, Alexander, 2010. "Linear rational-expectations models with lagged expectations: A synthetic method," Journal of Economic Dynamics and Control, Elsevier, Elsevier, vol. 34(5), pages 984-1002, May.
  3. Christopher D. Carroll, 2003. "Macroeconomic Expectations Of Households And Professional Forecasters," The Quarterly Journal of Economics, MIT Press, MIT Press, vol. 118(1), pages 269-298, February.
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