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Investigating the Dynamic Effects of Counterfeits with a Random Changepoint Simultaneous Equation Model

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  • Yi Qian
  • Hui Xie

Abstract

Using a unique panel dataset and a new model, this article investigates the dynamic effects of counterfeit sales on authentic-product price dynamics. We propose a Bayesian random-changepoint simultaneous equation model that simultaneously takes into account three important features in empirical studies: (1) Endogeneity of a market entry, (2) Nonstationarity of the entry effects and (3) Heterogeneity of the firms' response behaviors. Besides accounting for the endogeneity of counterfeiting, the proposed methodology improves the estimation of dynamic effects under heterogeneous response times by firms. We identify both a temporary negative short-term effect and a stable positive long-term effect of counterfeit sales on the authentic prices. Such effect estimates are biased in the OLS model and attenuated in a standard IV model. The findings help to unify two strands of I.O. theories on the pricing effects of competition. Finally, our analysis identifies considerable heterogeneity in authentic firms' response behaviors (both response time and magnitude), and the hierarchical structure of our model enables a study of the drivers of the heterogeneity. This study casts managerial insights on effective brand protection and management strategies that can be tailored to each type of firms. The method illustrated provides a new approach to use field data to study the determinants of a firm's response time, an important dimension of management strategy. In particular, firms with more human capital or less diversification from infringed markets were faster in responding and differentiating from counterfeits. The proposed framework can be widely applied to study dynamic and heterogeneous causal effects of marketing variables.

Suggested Citation

  • Yi Qian & Hui Xie, 2011. "Investigating the Dynamic Effects of Counterfeits with a Random Changepoint Simultaneous Equation Model," NBER Working Papers 16692, National Bureau of Economic Research, Inc.
  • Handle: RePEc:nbr:nberwo:16692
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    References listed on IDEAS

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    1. Fiona Scott Morton & Florian Zettelmeyer, 2004. "The Strategic Positioning of Store Brands in Retailer--Manufacturer Negotiations," Review of Industrial Organization, Springer;The Industrial Organization Society, vol. 24(2), pages 161-194, March.
    2. Deleersnyder, B. & Dekimpe, M.G. & Steenkamp, J.E.B.M. & Koll, O., 2007. "Win-win strategies at discount stores," Other publications TiSEM 34fbe624-0ee7-4c52-b640-7, Tilburg University, School of Economics and Management.
    3. Koen Pauwels & Shuba Srinivasan, 2004. "Who Benefits from Store Brand Entry?," Marketing Science, INFORMS, vol. 23(3), pages 364-390, July.
    4. Rao, Akshay R & Monroe, Kent B, 1996. "Causes and Consequences of Price Premiums," The Journal of Business, University of Chicago Press, vol. 69(4), pages 511-535, October.
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    Cited by:

    1. Yi Qian, 2011. "Counterfeiters: Foes or Friends? How Do Counterfeits Affect Different Product Quality Tiers?," NBER Working Papers 16785, National Bureau of Economic Research, Inc.
    2. Rosalie Liccardo Pacula & Srikanth Kadiyala & Priscillia Hunt & Alessandro Malchiodi, 2012. "An Alternative Framework for Empirically Measuring the Size of Counterfeit Markets," NBER Working Papers 18171, National Bureau of Economic Research, Inc.

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    More about this item

    JEL classification:

    • O34 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Intellectual Property and Intellectual Capital

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