Discussion paper

DP1153 Measuring Core Inflation

In this paper we argue that measured (RPI) inflation is conceptually mismatched with core inflation: the difference is more than just `measurement error'. We propose a technique for measuring core inflation based on an explicit long-run economic hypothesis. Core inflation is defined as that component of measured inflation that has no (medium- to) long-run impact on real output - a notion that is consistent with the vertical long-run Phillips curve interpretation of the co-movements in inflation and output. We construct a measure of core inflation by placing dynamic restrictions on a vector autoregression (VAR) system.

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Citation

Quah, D (1995), ‘DP1153 Measuring Core Inflation‘, CEPR Discussion Paper No. 1153. CEPR Press, Paris & London. https://cepr.org/publications/dp1153