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Comparative Statics for a Consumer with Possibly Multiple Optimum Consumption Bundles

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  • Dasgupta, Indraneel

    (Indian Statistical Institute)

  • Pattanaik, Prasanta K.

    (University of California, Riverside)

Abstract

Non-positivity of the generalized substitution effect, non-positivity of the own-price substitution effect, homogeneity of degree zero in all prices and income, and the law of demand are some of the most primitive comparative static results in the standard revealed preference theory of consumers’ behaviour. These results are however derived for demand functions. The literature does not have corresponding comparative static results for the more plausible case of demand correspondences, where the consumer is permitted to have multiple chosen bundles in a given price-income situation. Using the revealed preference approach to the theory of consumers' behaviour, this note establishes such results for demand correspondences; the analysis can be readily adapted to prove corresponding results in the preference-based approach.

Suggested Citation

  • Dasgupta, Indraneel & Pattanaik, Prasanta K., 2010. "Comparative Statics for a Consumer with Possibly Multiple Optimum Consumption Bundles," IZA Discussion Papers 4818, Institute of Labor Economics (IZA).
    • Handle: RePEc:iza:izadps:dp4818
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    References listed on IDEAS

    as
    1. Milgrom, Paul & Roberts, John, 1994. "Comparing Equilibria," American Economic Review, American Economic Association, vol. 84(3), pages 441-459, June.
    2. Hicks, J. R., 1986. "A Revision of Demand Theory," OUP Catalogue, Oxford University Press, number 9780198285502.
    3. Amartya K. Sen, 1971. "Choice Functions and Revealed Preference," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 38(3), pages 307-317.
    Full references (including those not matched with items on IDEAS)

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    More about this item

    Keywords

    demand correspondence; weak axiom of revealed preference; non-positivity of generalized substitution effect; non-positivity of own-price substitution effect; homogeneity of degree zero; law of demand;
    All these keywords.

    JEL classification:

    • D11 - Microeconomics - - Household Behavior - - - Consumer Economics: Theory

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