An Empirical Assessment of Endogeneity Issues In Demand Analysis for Differentiated Products

Tirtha Dhar (), Jean-Paul Chavas () and Brian W. Gould

No 66, Food Marketing Policy Center Research Reports from University of Connecticut, Department of Agricultural and Resource Economics, Charles J. Zwick Center for Food and Resource Policy

Abstract: This article explores the issue of price and expenditure endogeneity in empirical demand analysis. The analysis focuses on the US carbonated soft drink market. We test the null hypothesis that price and expenditures are exogenous in the demand for carbonated soft drinks. Using an Almost Ideal Demand System (AIDS) specification, we strongly reject exogeneity for both prices and expenditures. We find that accounting for price/expenditures endogeneity significantly impacts demand elasticity estimates. We also evaluate the implications of endogeneity issues for testing weak separability.

Keywords: endogeneity; separability; carbonated soft drinks; Almost Ideal Demand System; Demand and Price Analysis (search for similar items in EconPapers)
Date: 2002
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Citations: View citations in EconPapers (1)

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Related works:
Working Paper: An Empirical Assessment of Endogeneity Issues In Demand Analysis for Differentiated Products (2002)
Working Paper: An Empirical Assessment of Endogeneity Issues in Demand Analysis for Differentiated Products (2002)
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