Resolving the Missing Deflation and Inflation Puzzles
VOX, CEPR Policy Portal,
The alleged breakdown of the Phillips curve has left monetary policy researchers and central bankers wondering if we need to develop completely new models for price and wage determination. This column argues that a relatively small alteration of the standard New Keynesian model, combined with using the nonlinear instead of the linearised solution, is sufficient to resolve the two puzzles – the ‘missing deflation’ during the recession and the ‘missing inflation’ during the recovery – underlying the supposed breakdown.
Resolving the Missing Deflation Puzzle
CEPR Discussion Papers 13690,
We propose a resolution of the missing deflation puzzle. Our resolution stresses the importance of nonlinearities in price- and wage-setting when the economy is exposed to large shocks. We show that a nonlinear macroeconomic model with real rigidities resolves the missing deflation puzzle, while a linearized version of the same underlying nonlinear model fails to do so. In addition, our nonlinear model reproduces the skewness of inflation and other macroeconomic variables observed in post-war U.S. data. All told, our results caution against the common practice of using linearized models to study inflation and output dynamics.
09.03.2017 • 12/2017
Comment: Keep cool and be prepared – IWH president Gropp on the ECB’s interest rates decision
”The European Central Bank (ECB) decided to keep interest rates unchanged today. No surprise here. But Mario Draghi unfortunately did not provide a signal to markets that the ECB may be moving on interest rates in the foreseeable future. “This is a reasonable decision, but also a missed opportunity”, Reint E. Gropp, president of the Halle Institute for Economic Research (IWH) – Member of the Leibniz Association, says. “An ECB increase interest rate move must be well prepared, and today’s press conference would have been an opportunity to prepare markets for the fact that interest rates cannot stay where they are forever.”
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