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Complexity and Monetary Policy

Athanasios Orphanides () and Volker Wieland ()

No 9107, CEPR Discussion Papers from C.E.P.R. Discussion Papers

Abstract: The complexity resulting from intertwined uncertainties regarding model misspecification and mismeasurement of the state of the economy defines the monetary policy landscape. Using the euro area as laboratory this paper explores the design of robust policy guides aiming to maintain stability in the economy while recognizing this complexity. We document substantial output gap mismeasurement and make use of a new model data base to capture the evolution of model specification. A simple interest rate rule is employed to interpret ECB policy since 1999. An evaluation of alternative policy rules across 11 models of the euro area confirms the fragility of policy analysis optimized for any specific model and shows the merits of model averaging in policy design. Interestingly, a simple difference rule with the same coefficients on inflation and output growth as the one used to interpret ECB policy is quite robust as long as it responds to current outcomes of these variables.

Keywords: complexity; ECB; Financial crisis; model uncertainty; monetary policy; robust simple rules (search for similar items in EconPapers)
JEL-codes: E50 E52 E58 (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-cba, nep-eec, nep-mac and nep-mon
Date: 2012-08
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Journal Article: Complexity and Monetary Policy (2013) Downloads
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Working Paper: Complexity and monetary policy (2012) Downloads
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