Zjawisko uporczywości (inercyjności) inflacji w Polsce
The Phenomenon of Inflation Persistence (Inertia) in Poland

Summary/Abstract: The purpose of this study is to analyze the phenomenon of inflation persistence (inertia) in Poland. Inflation persistence is defined as a strong positive relationship between inflation in the current period and prior periods. This causes difficulties for monetary authorities to reduce inflation after its acceleration, and the necessary adjustments last longer and cause greater volatility in output and employment. The empirical analysis using the vector autoregression model (VAR) confirmed the presence in Poland of a relatively high inflation persistence in the period 1996-2012. The degree of inflation persistence was differentiated for individual groups of goods and services included in the harmonized index of consumer prices (HICP). The highest price inertia occurred in the case of alcoholic beverages and tobacco products as well as clothing and footwear, and the lowest one was observed in communication services.

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