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Uncertainty and Sentiment-Driven Equilibria

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  • Jess Benhabib
  • Pengfei Wang
  • Yi Wen

Abstract

We construct a model to capture the Keynesian idea that production and employment decisions are based on expectations of aggregate demand driven by sentiments, and that realized demand follows from the production and employment decisions of firms. We cast the Keynesian idea into a simple model with imperfect information about aggregate demand and we characterize the rational expectations equilibria of this model. We find that the equilibrium is not unique despite the absence of any non-convexities or strategic complementarity in the model. In addition to multiple fundamental equilibria, there can be serially correlated stochastic equilibria driven by self-fulfilling consumer sentiments. Furthermore, these sentiment-driven equilibria are not based on randomizations of the fundamental equilibria

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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 18878.

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Date of creation: Mar 2013
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Handle: RePEc:nbr:nberwo:18878

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