What Makes the Output-Inflation Trade-Off Change? The Absence of Accelerating Deflation in Japan

Emmanuel De Veirman

Journal of Money, Credit and Banking, 2009, vol. 41, issue 6, pages 1117-1140

Abstract: It is standard to model the output-inflation trade-off as a linear relationship with a time-invariant slope. We assess empirical evidence for two sets of theories that allow for endogenous variation in the slope of the short-run Phillips curve. At an empirical level, we examine why large negative output gaps in Japan in the late 1990s did not lead to accelerating deflation but instead coincided with stable, albeit moderately negative inflation. Our results suggest that this episode is most convincingly interpreted as reflecting a gradual flattening of the Phillips curve. We find that this flattening is best explained by models with endogenous price durations. These models imply that in any economy where trend inflation is substantially lower (or substantially higher) today than in past decades, time variation in the slope of the Phillips curve has become too important to ignore. Copyright (c) 2009 The Ohio State University.

Date: 2009

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Persistent link: http://EconPapers.repec.org/RePEc:mcb:jmoncb:v:41:y:2009:i:6:p:1117-1140

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