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What can survey forecasts tell us about informational rigidities?

  • Author(s): Gorodnichenko, Yuriy;
  • Coibion, Olivier
  • et al.

Published Web Location

http://eml.berkeley.edu/~ygorodni/CoibionGorodnichenko.pdf
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Abstract

This paper assesses both the support for and the properties of informational rigidities faced by agents. Specifically, we track the impulse responses of mean forecast errors and disagreement among agents after exogenous structural shocks. Our key contribution is to document that in response to structural shocks, mean forecasts fail to completely adjust on impact, leading to statistically and economically significant deviations from the null of full information: the half life of forecast errors is roughly between 6 months and a year. Importantly, the dynamic process followed by forecast errors following structural shocks is consistent with the predictions of models of informational rigidities. We interpret this finding as providing support for the recent expansion of research into models of informational rigidities. In addition, we document several stylized facts about the conditional responses of forecast errors and disagreement among agents that can be used to differentiate between some of the models of informational rigidities recently proposed. We use a variety of structural shocks, expectation surveys, and robustness checks to establish these facts about informational rigidities.

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