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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.

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File URL: http://purl.umn.edu/25227
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Bibliographic Info

Paper provided by University of Connecticut, Food Marketing Policy Center in its series Research Reports with number 25227.

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Date of creation: 2002
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Handle: RePEc:ags:uconnr:25227

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Postal: 1376 Storrs Road, Unit 4021, Storrs, CT 06269-4021
Phone: (860) 486-1927
Fax: (860) 486-2461
Email:
Web page: http://www.fmpc.uconn.edu/
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Related research

Keywords: endogeneity; separability; carbonated soft drinks; Almost Ideal Demand System; Demand and Price Analysis;

References

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1. Cotterill, Ronald W & Putsis, William P, Jr & Dhar, Ravi, 2000. "Assessing the Competitive Interaction between Private Labels and National Brands," The Journal of Business, University of Chicago Press, vol. 73(1), pages 109-37, January.
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   • Blackorby, Charles & Davidson, Russell & Schworm, William, 1991. "Implicit separability: Characterisation and implications for consumer demands," Journal of Economic Theory, Elsevier, vol. 55(2), pages 364-399, December.
   • Blackorby, C. & Davidson, R. & Schworm, W., 1990. "Implicit Separability: Characterisation And Implications For Consumer Demands," G.R.E.Q.A.M. 90a16, Universite Aix-Marseille III.
3. Kadiyali, Vrinda & Vilcassim, Naufel J & Chintagunta, Pradeep K, 1996. "Empirical Analysis of Competitive Product Line Pricing Decisions: Lead, Follow, or Move Together?," The Journal of Business, University of Chicago Press, vol. 69(4), pages 459-87, October.
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5. Ronald W. Cotterill & Andrew W. Franklin & Li Yu Ma, 1996. "Measuring Market Power Effects in Differentiated Product Industries: An Application to the Soft Drink Industry," Food Marketing Policy Center Research Reports 032, University of Connecticut, Department of Agricultural and Resource Economics, Charles J. Zwick Center for Food and Resource Policy.
6. Mario F. Teisl & Nancy E. Bockstael & Alan Levy, 2001. "Measuring the Welfare Effects of Nutrition Information," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 83(1), pages 133-149.
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9. Aviv Nevo, 1998. "Measuring Market Power in the Ready-to-Eat Cereal Industry," NBER Working Papers 6387, National Bureau of Economic Research, Inc.
   
   • Nevo, Aviv, 2001. "Measuring Market Power in the Ready-to-Eat Cereal Industry," Econometrica, Econometric Society, vol. 69(2), pages 307-42, March.
   • Nevo, Aviv, 1999. "Measuring Market Power in the Ready-to-Eat Cereal Industry," Competition Policy Center, Working Paper Series qt7cm5p858, Competition Policy Center, Institute for Business and Economic Research, UC Berkeley.
   • Aviv Nevo, 2003. "Measuring Market Power in the Ready-to-Eat Cereal Industry," Microeconomics 0303006, EconWPA.
   • Nevo, Aviv, 1998. "Measuring Market Power in the Ready-To-Eat Cereal Industry," Research Reports 25164, University of Connecticut, Food Marketing Policy Center.
10. Richard Blundell & Jean-Marc Robin, 2000. "Latent Separability: Grouping Goods without Weak Separability," Econometrica, Econometric Society, vol. 68(1), pages 53-84, January.
    
    • Richard Blundell & Robin, J M, 1995. "Latent separability: grouping goods without weak separability," IFS Working Papers W95/09, Institute for Fiscal Studies.
11. Jeffrey T. LaFrance, 1993. "Weak Separability in Applied Welfare Analysis," Monash Economics Working Papers archive-26, Monash University, Department of Economics.
12. Steven T. Berry, 1994. "Estimating Discrete-Choice Models of Product Differentiation," RAND Journal of Economics, The RAND Corporation, vol. 25(2), pages 242-262, Summer.
13. Hausman, Jerry A, 1978. "Specification Tests in Econometrics," Econometrica, Econometric Society, vol. 46(6), pages 1251-71, November.
14. Cotterill, Ronald W. & Franklin, Andrew W. & Ma, Li Yu, 1996. "Measuring Market Power Effects in Differentiated Product Industries: An Application to the Soft Drink Industry," Research Reports 25229, University of Connecticut, Food Marketing Policy Center.

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Cited by:

1. Bopape, Lesiba, 2006. "Heterogeneity of Household Food Expenditure Patterns in South Africa," 2006 Annual meeting, July 23-26, Long Beach, CA 21300, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).
2. Muhammad, Andrew, 2008. "The Role of the Imports for Re-Exports Program in Determining Canadian Demand for Imported Cheese: Implications for U.S. Exports," 2008 Annual Meeting, February 2-6, 2008, Dallas, Texas 8214, Southern Agricultural Economics Association.
3. Pan, Suwen & Mohanty, Samarendu & Welch, Mark, 2008. "India Edible Oil Consumption: A Censored Incomplete Demand Approach," Journal of Agricultural and Applied Economics, Southern Agricultural Economics Association, vol. 40(03), December.
4. Susanto, Dwi & Rosson, C. Parr, III & Henneberry, Shida Rastegari, 2008. "The Structure of U.S. Red Meat and Livestock Imports," 2008 Annual Meeting, February 2-6, 2008, Dallas, Texas 6824, Southern Agricultural Economics Association.
5. Wang, Shinn-Shyr & Stiegert, Kyle W. & Dhar, Tirtha Pratim, 2005. "Strategic Pricing Behavior under Asset Value Maximization," 2005 Annual meeting, July 24-27, Providence, RI 19198, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).
   
   • Shinn-Shyr Wang & Kyle W. Stiegert & Tirtha P. Dhar, 2010. "Strategic Pricing Behavior under Asset Value Maximization," Canadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie, Canadian Agricultural Economics Society/Societe canadienne d'agroeconomie, vol. 58(2), pages 151-170, 06.
   • Wang, Shinn-Shyr & Stiegert, Kyle W. & Dhar, Tirtha P., 2006. "Strategic Pricing Behavior under Asset Value Maximization," Staff Paper Series 495, University of Wisconsin, Agricultural and Applied Economics.
6. Dhar, Tirtha Pratim & Foltz, Jeremy D., 2003. "Market Structure And Consumer Valuation In The Rbst-Free And Organic Milk Markets," 2003 Annual meeting, July 27-30, Montreal, Canada 22177, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).
7. Du, Ying & Stiegert, Kyle W., 2009. "Strategic Vertical Pricing in the U.S. Butter Market," 2009 Annual Meeting, July 26-28, 2009, Milwaukee, Wisconsin 51712, Agricultural and Applied Economics Association.
8. Pan, Suwen & Jensen, Helen H., 2008. "Does the Food Stamp Program Affect Food Security Status and the Composition of Food Expenditures?," Staff General Research Papers 12896, Iowa State University, Department of Economics.
   
   • Pan, Suwen & Jensen, Helen H., 2008. "Does the Food Stamp Program Affect Food Security Status and the Composition of Food Expenditures?," Journal of Agricultural and Applied Economics, Southern Agricultural Economics Association, vol. 40(01), April.
9. Francesco Torrisi & Gianluca Stefani & Chiara Seghieri, 2006. "Use of scanner data to analyze the table wine demand in the Italian major retailing trade," Agribusiness, John Wiley & Sons, Ltd., vol. 22(3), pages 391-403.
10. Dhar, Tirtha Pratim & Foltz, Jeremy D., 2004. "Is Soy Milk? The Economics Of The Soy Milk Market," 2004 Annual meeting, August 1-4, Denver, CO 20337, American Agricultural Economics Association (New Name 2008: Agricultural and Applied Economics Association).

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