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Competition and Advertising in Specialized Markets: A Study of the U.S. Pharmaceutical Industry

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  • Amrita Bhattacharyya

    () (Boston College)

Abstract

This paper analyzes advertising incentives and strategies in specialized markets, where consumers' decisions are dictated by experts. By analyzing the market stealing and market expanding aspects of advertising, this study shows that in a sub-game perfect equilibrium only some (and not all) firms may choose to advertise to consumers. From the welfare perspective, consumer advertising is socially optimal when advertising has only market expanding effects. Furthermore, a simple game-theoretic model shows that when only some firms advertise to consumers, the crucial determinant of advertising is the number of advertisers. In particular, with increased competition from rival advertisers, each firm's advertising decreases. Modeling specific features of the U.S. prescription drugs market the theoretical analysis suggests that the wide variation in direct-to-consumer-advertising (DTCA) by U.S. pharmaceutical companies both within and across drug classes is due to differences in disease-familiarity and heterogeneity in patients' types. Using annual, brand-level DTCA expenditure data for prescription drugs, empirical results give evidence of the negative impact of competition on advertising.

Suggested Citation

  • Amrita Bhattacharyya, 2005. "Competition and Advertising in Specialized Markets: A Study of the U.S. Pharmaceutical Industry," Boston College Working Papers in Economics 624, Boston College Department of Economics, revised 10 Nov 2005.
  • Handle: RePEc:boc:bocoec:624 Note: previously circulated as "Why Count Advertising Rivals? Competition and Consumer Advertising in Specialized Markets"
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    References listed on IDEAS

    as
    1. Cabral, Luis M. B., 2000. "Introduction to Industrial Organization," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262032864, January.
    2. Gary S. Becker & Kevin M. Murphy, 1993. "A Simple Theory of Advertising as a Good or Bad," The Quarterly Journal of Economics, Oxford University Press, vol. 108(4), pages 941-964.
    3. Amrita Bhattacharyya, 2005. "Advertising in Specialized Markets: Example from the US Pharmaceutical Industry," Boston College Working Papers in Economics 610, Boston College Department of Economics, revised 10 Nov 2005.
    4. Gerard R. Butters, 1977. "Equilibrium Distributions of Sales and Advertising Prices," Review of Economic Studies, Oxford University Press, vol. 44(3), pages 465-491.
    Full references (including those not matched with items on IDEAS)

    More about this item

    Keywords

    Advertising; Competition; Pharmaceutical; Expert; Nash equilibrium;

    JEL classification:

    • L0 - Industrial Organization - - General
    • M3 - Business Administration and Business Economics; Marketing; Accounting; Personnel Economics - - Marketing and Advertising
    • I0 - Health, Education, and Welfare - - General

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