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An Experimental Test of a Collective Search Model


  • Yoichi Hizen

    (Hokkaido University)

  • Keisuke Kawata

    () (Osaka University)

  • Masaru Sasaki

    (Osaka University)


This paper's objectives are to design laboratory experiments of finite and infinite sequen- tial collective search models and to test some implications obtained in the model of Albrecht, Anderson and Vroman (2010) (the AAV model). We find that, compared with single-agent search, the average search duration is longer in collective search with the unanimity rule, but it is shorter in the case of collective search in which at least one vote is needed to stop searching. In addition, according to estimates from round-based search decisions, subjects are more likely to vote to stop searching in collective search than in single-agent search. This confirms that agents are less picky in the case of collective search. Overall, the experimental outcomes are consistent with the implications suggested by the AAV model. However, a different outcome is obtained from the AAV model in terms of the size order of the probabilities of voting to stop searching in collective search for the various plurality voting rules.

Suggested Citation

  • Yoichi Hizen & Keisuke Kawata & Masaru Sasaki, 2011. "An Experimental Test of a Collective Search Model," Discussion Papers in Economics and Business 11-06, Osaka University, Graduate School of Economics and Osaka School of International Public Policy (OSIPP).
  • Handle: RePEc:osk:wpaper:1106

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    References listed on IDEAS

    1. Chen, Yan & Katuscak, Peter & Ozdenoren, Emre, 2007. "Sealed bid auctions with ambiguity: Theory and experiments," Journal of Economic Theory, Elsevier, vol. 136(1), pages 513-535, September.
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    More about this item


    experiment; collective search; voting rule.;

    JEL classification:

    • C91 - Mathematical and Quantitative Methods - - Design of Experiments - - - Laboratory, Individual Behavior
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness

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