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Reputation and Market Structure in Experimental Platforms

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  • Philip C. Solimine

    (Department of Economics and Department of Scientific Computing, Florida State University)

  • R. Mark Isaac

    (Department of Economics, Florida State University)

Abstract

In this paper we conduct a market experiment with the opportunity for sellers to send a nonbinding advertisement of their product quality. We examine the effects of including a reputation aggregation system for sellers in these markets. In order to closely match the setting of real-life markets, we conduct a laboratory experiment designed to emulate an online marketplace. In some sessions, we prompt buyers to respond to their purchases with a canonical "five-star" rating, and display the average rating to buyers in each round. We find substantial efficiency gains from the addition of the ratings system, but not enough to obtain fully efficient market outcomes. These efficiency gains come primarily through a decrease in false advertising behavior by the sellers, as they compete to build reputations. We structurally examine the formation of reputations by the sellers (with and without ratings) and the effect of these reputations on the decisions of buyers and sellers in the market. Using a bipartite network of transaction data, we will quantify the effects of ratings in promoting trust and supporting diverse, connected, and high quality markets.

Suggested Citation

  • Philip C. Solimine & R. Mark Isaac, 2021. "Reputation and Market Structure in Experimental Platforms," Working Papers wp2021_08_01, Department of Economics, Florida State University.
  • Handle: RePEc:fsu:wpaper:wp2021_08_01
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    More about this item

    Keywords

    Product Quality; Seller Reputation; Ratings; Experimental Market Design; Plat- forms; Adverse Selection;
    All these keywords.

    JEL classification:

    • L1 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance
    • L2 - Industrial Organization - - Firm Objectives, Organization, and Behavior
    • D4 - Microeconomics - - Market Structure, Pricing, and Design
    • D8 - Microeconomics - - Information, Knowledge, and Uncertainty

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