We ask why, in many circumstances and many environments, decision-makers choose to act on a time-regular basis (e.g. adjust every six weeks, etc.) or on a state-regular basis (e.g. change an interest rate by 0.25%, etc.), even though such an approach appears suboptimal. The paper attributes regular behaviour to adjustment cost heterogeneity. The reasons for this heterogeneity are discussed. We show that, given the cost heterogeneity, the likelihood of adopting regular policies depends on the shape of the benefit function: the flatter it is, the more likely, ceteris paribus, is regular adjustment. In general, however, there is no clear relationship between the degree of cost and benefit function heterogeneity and the incidence of regular adjustment. We provide sufficient conditions under which the less frequent are adjustments, the greater is the incidence of regular policies. To test the model we use a large Austrian data set, which consists of the direct price information collected by the statistical office and covers 80% of the CPI over eight years. We run cross-sectional tests, regressing the proportion of attractive prices and, separately, the excess proportion of price changes at the beginning of a year and at the beginning of a quarter, on various conditional frequencies of adjustment, inflation and its variability, dummies for good types, and other relevant variables. The results provide strong support for the model: the lower is, in a given market, the conditional frequency of price changes, the higher is the incidence of time- and state-regular adjustment.
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Find related papers by JEL classification: E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation L11 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Production, Pricing, and Market Structure; Size Distribution of Firms E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy D01 - Microeconomics - - General - - - Microeconomic Behavior: Underlying Principles
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Daniel Levy & Dongwon Lee & Haipeng Chen & Robert Kauffman & Mark Bergen, 2008.
"Price Points and Price Rigidity,"
Emory Economics
0809, Department of Economics, Emory University (Atlanta).
[Downloadable!]
Other versions:
Levy, Daniel & Lee, Dongwon & Chen, Allan (Haipeng) & Kauffman, Robert & Bergen, Mark, 2007.
"Price Points and Price Rigidity,"
MPRA Paper
1472, University Library of Munich, Germany.
[Downloadable!]
Daniel Levy & Dongwon Lee & Haipeng Allan Chen & Robert J. Kauffman & Mark Bergen, 2007.
"Price Points and Price Rigidity,"
Working Paper Series
04-07, Rimini Centre for Economic Analysis, revised Jul 2007.
[Downloadable!]