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Is the Euro-Area Core Price Index Really More Persistent than the Food and Energy Price Indexes?

  • José Manuel Belbute


    (Departamento de Economia, CEFAGE-UE, Universidade de Évora)

The purpose of this paper is to measure the degree of persistence of the overall, core, food and energy Harmonized Indexes of Consumer Prices for the European Monetary Zone (HICP-EAs) and to identify its implications for decision-making in the private sector and in public policy. Using a non-parametric approach, our results demonstrate the presence of a statistically significant level of persistence in four HICP-EAs: headline, core, food and energy. Moreover, contrary to popular belief, the core index does not reflect permanent price changes. We also find evidence that the food and energy price indexes are more volatile and more persistent than the other two price indexes. Our results also show a reduction in persistence for both the headline and the core price indexes after the implementation of the single monetary policy, but not for food and energy. These results have important implications for both the private sector and for policymakers who use the core as a reference price index for their decision-making because the use of this index can lead to an erroneous perception of price movements.

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Paper provided by University of Evora, CEFAGE-UE (Portugal) in its series CEFAGE-UE Working Papers with number 2011_14.

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Length: 17 pages
Date of creation: 2011
Date of revision:
Handle: RePEc:cfe:wpcefa:2011_14
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