Expectations, Learning and Monetary Policy: An Overview of Recent Research

52 Pages Posted: 31 Jan 2008

See all articles by George W. Evans

George W. Evans

University of Oregon - Department of Economics; University of St. Andrews - School of Economics and Finance

Seppo Honkapohja

Centre for Economic Policy Research (CEPR); Aalto University School of Business; CESifo (Center for Economic Studies and Ifo Institute for Economic Research); Aalto University - School of Business

Abstract

Expectations about the future are central for determination of current macroeconomic outcomes and the formulation of monetary policy. Recent literature has explored ways for supplementing the benchmark of rational expectations with explicit models of expectations formation that rely on econometric learning. Some apparently natural policy rules turn out to imply expectational instability of private agents' learning. We use the standard New Keynesian model to illustrate this problem and survey the key results for interest-rate rules that deliver both uniqueness and stability of equilibrium under econometric learning. We then consider some practical concerns such as measurement errors in private expectations, observability of variables and learning of structural parameters required for policy. We also discuss some recent applications, including policy design under perpetual learning, estimated models with learning, recurrent hyperinflation, and macroeconomic policy to combat liquidity traps and deflation.

Keywords: imperfect knowledge, learning, interest-rate setting, fluctuations, stability, determinacy

JEL Classification: E52, E31, D84

Suggested Citation

Evans, George W. and Honkapohja, Seppo and Honkapohja, Seppo, Expectations, Learning and Monetary Policy: An Overview of Recent Research. Bank of Finland Research Discussion Paper No. 32/2007, CDMA Working Paper No. 0802, Available at SSRN: https://ssrn.com/abstract=1086907 or http://dx.doi.org/10.2139/ssrn.1086907

George W. Evans

University of Oregon - Department of Economics ( email )

1285 University of Oregon
Eugene, OR 97403
United States
541-346-4662 (Phone)
541-346-1243 (Fax)

University of St. Andrews - School of Economics and Finance ( email )

The Scores, Castlecliff
St. Andrews, Fife KY16 8RD
United Kingdom
44-1334-462435 (Phone)

HOME PAGE: http://www.st-andrews.ac.uk/economics/staff/pages.g.evans.shtml

Seppo Honkapohja (Contact Author)

Centre for Economic Policy Research (CEPR)

London
United Kingdom

Aalto University School of Business ( email )

, PO Box 21210
Aalto FI-00076
Finland

CESifo (Center for Economic Studies and Ifo Institute for Economic Research)

Poschinger Str. 5
Munich, DE-81679
Germany

HOME PAGE: http://www.CESifo.de

Aalto University - School of Business

Finland

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