Decomposition analysis of consumers' demand changes: an application to Greek consumption data

Giannis Karagiannis and Kostas Velentzas

Applied Economics, 2004, vol. 36, issue 5, 497-504

Abstract: A decomposition analysis for consumer demand functions is developed. Changes in Marshallian demand or expenditure shares functions over time are decomposed into a total substitution effect, an income effect, and a habit effect. This framework is applied to post-war Greek consumption patterns through a habit persistence version of the Quadratic Almost Ideal Demand System (QUAIDS). It is found that for all commodity categories (i.e., food, beverages and tobacco, footwear and clothing, settling and housing, and others) the income effect was the main driving force in explaining changes in both quantity demanded and expenditure shares, followed by habit and total substitution effects.

Date: 2004
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DOI: 10.1080/00036840410001682205

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