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Logit Demand Estimation Under Competitive Pricing Behavior: An Equilibrium Framework

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Author Info

  • David Besanko

    (Kellogg Graduate School of Management, Northwestern University, Evanston, Illinois 60208)

  • Sachin Gupta

    (Kellogg Graduate School of Management, Northwestern University, Evanston, Illinois 60208)

  • Dipak Jain

    (Kellogg Graduate School of Management, Northwestern University, Evanston, Illinois 60208)

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    Abstract

    Discrete choice models of demand have typically been estimated assuming that prices are exogenous. Since unobservable (to the researcher) product attributes, such as coupon availability, may impact consumer utility as well as price setting by firms, we treat prices as endogenous. Specifically, prices are assumed to be the equilibrium outcomes of Nash competition among manufacturers and retailers. To empirically validate the assumptions, we estimate logit demand systems jointly with equilibrium pricing equations for two product categories using retail scanner data and cost data on factor prices. In each category, we find statistical evidence of price endogeneity. We also find that the estimates of the price response parameter and the brand-specific constants are generally biased downward when the endogeneity of prices is ignored. Our framework provides explicit estimates of the value created by a brand, i.e., the difference between consumers' willingness to pay for a brand and its cost of production. We develop theoretical propositions about the relationship between value creation and competitive advantage for logit demand systems and use our empirical results to illustrate how firms use alternative value creation strategies to accomplish competitive advantage.

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    File URL: http://dx.doi.org/10.1287/mnsc.44.11.1533
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    Bibliographic Info

    Article provided by INFORMS in its journal Management Science.

    Volume (Year): 44 (1998)
    Issue (Month): 11-Part-1 (November)
    Pages: 1533-1547

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    Handle: RePEc:inm:ormnsc:v:44:y:1998:i:11-part-1:p:1533-1547

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    Related research

    Keywords: Demand Estimation; Logit; Endogeneity; Competitive Strategy;

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