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Liquidity Traps, Learning and Stagnation

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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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  • Evans, G.W. & Guse, E. & Honkapohja, S, 2007. "Liquidity Traps, Learning and Stagnation," Cambridge Working Papers in Economics 0732, Faculty of Economics, University of Cambridge.
  • Handle: RePEc:cam:camdae:0732
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    More about this item

    Keywords

    Adaptive Learning; Monetary Policy; Fiscal Policy; Zero Interest Rate Lower Bound; Indeterminacy;
    All these keywords.

    JEL classification:

    • E63 - Macroeconomics and Monetary Economics - - Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook - - - Comparative or Joint Analysis of Fiscal and Monetary Policy; Stabilization; Treasury Policy
    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
    • E58 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Central Banks and Their Policies

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