We analyze the economic dynamics in a basic New Keynesian model adjusted for imperfect, heterogeneous knowledge and adaptive learning. The policy, represented by a forward-looking Taylor rule, is driven by the central bank's own internal forecasts, whereas the core economic dynamics are driven by private agents' expectations. We study the implications of disagreement between those two. We find that if there is expectations heterogeneity, monetary policy should be less active in its actions in order to be short-run stability improving, and to affect positively the speed of convergence towards the first best equilibrium in the long run. This is in contrast to the homogeneous incomplete knowledge literature, which predicts the opposite. We also find that the homogeneous expectations economy is easier to operate in for monetary policy, and that policy can be more effective than in the heterogeneous expectations economy. From the perspective of incomplete, heterogeneous knowledge and adaptive learning methodology, we can thus see the importance of good communication policy and monetary policy credibility.
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Paper provided by Czech National Bank, Research Department in its series Working Papers with number
2006/5.
Find related papers by JEL classification: E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
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References listed on IDEAS Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
N. Gregory Mankiw & Ricardo Reis & Justin Wolfers, 2004.
"Disagreement about Inflation Expectations,"
NBER Chapters,
in: NBER Macroeconomics Annual 2003, Volume 18, pages 209-270
National Bureau of Economic Research, Inc.
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