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A testable model of consumption with externalities


  • Deb, Rahul


This paper presents a nonparametric model of interdependent preferences, where an individual's consumption may act as an externality on the preferences of other consumers. We assume that individual price consumption data is observed for all consumers. It is known that the general consumption model with externalities imposes few restrictions on the observed data, where the consistency requirement is Nash rationalizability. We motivate potential games as an important sub class of games where the family of concave potential games is refutable and imposes stronger restrictions on observed data. We use this framework to extend the analysis of Brown and Matzkin [D. Brown, R. Matzkin, Testable restrictions on the equilibrium manifold, Econometrica 64 (1996) 1249-1262] on refutable pure exchange economies to pure exchange economies with externalities. Finally, we discuss an application of this model to inter-household consumption data.

Suggested Citation

  • Deb, Rahul, 2009. "A testable model of consumption with externalities," Journal of Economic Theory, Elsevier, vol. 144(4), pages 1804-1816, July.
  • Handle: RePEc:eee:jetheo:v:144:y:2009:i:4:p:1804-1816

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    References listed on IDEAS

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    Cited by:

    1. Ray, Indrajit & Snyder, Susan, 2013. "Observable implications of Nash and subgame-perfect behavior in extensive games," Journal of Mathematical Economics, Elsevier, vol. 49(6), pages 471-477.
    2. Cherchye, Laurens & Demuynck, Thomas & De Rock, Bram, 2011. "Testable implications of general equilibrium models: An integer programming approach," Journal of Mathematical Economics, Elsevier, vol. 47(4-5), pages 564-575.
    3. Finn Christensen, 2014. "Comparative Statics, Stability, and Uniqueness," Working Papers 2014-02, Towson University, Department of Economics, revised Mar 2015.
    4. Deb, Rahul & Gazzale, Robert S. & Kotchen, Matthew J., 2014. "Testing motives for charitable giving: A revealed-preference methodology with experimental evidence," Journal of Public Economics, Elsevier, vol. 120(C), pages 181-192.
    5. Deb, Rahul & Fenske, James, 2009. "A Nonparametric Test of Strategic Behavior in the Cournot Model," MPRA Paper 16560, University Library of Munich, Germany.
    6. Jeremy T. Fox & Natalia Lazzati, 2012. "Identification of Potential Games and Demand Models for Bundles," NBER Working Papers 18155, National Bureau of Economic Research, Inc.


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