Discussion Paper Details

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Title: Liquidity Traps, Learning and Stagnation

Author(s): George W. Evans, Eran Guse and Seppo Honkapohja

Publication Date: June 2007

Keyword(s): adaptive learning, fiscal policy, indeterminacy, monetary policy and zero interest rate lower bound

Programme Area(s): International Macroeconomics

Abstract: We examine global economic dynamics under learning in a New Keynesian model in which the interest-rate rule is subject to the zero lower bound. Under normal monetary and fiscal policy, the intended steady state is locally but not globally stable. Large pessimistic shocks to expectations can lead to deflationary spirals with falling prices and falling output. To avoid this outcome we recommend augmenting normal policies with aggressive monetary and fiscal policy that guarantee a lower bound on inflation. In contrast, policies geared toward ensuring an output lower bound are insufficient for avoiding deflationary spirals.

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Bibliographic Reference

Evans, G, Guse, E and Honkapohja, S. 2007. 'Liquidity Traps, Learning and Stagnation'. London, Centre for Economic Policy Research.