School of Economics and Finance

No. 619: The Elusive Persistence: Wage and Price Rigidities, the Phillips Curve, and Inflation Dynamics

Chris Tsoukis , London Metropolitan University
George Kapetanios , Queen Mary, University of London
Joseph Pearlman , London Metropolitan University

October 1, 2007

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We review the main New Keynesian inflation equations that have arisen as a result of aggregation from individual firms' price rigidities. We find that, on the whole, they cannot account for inflation persistence, a key feature of the empirical dynamics of inflation, and with important policy implications. The only exception seems to be when price stickiness is combined with wage rigidity and staggering.

J.E.L classification codes: E31, E32

Keywords:Inflation rigidity, Price stickiness, Phillips curve