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Costly Communication in Groups: Theory and an Experiment

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  • Alistair Wilson

Abstract

I develop a novel model of group-based deliberation in which communication is costly in two directions: agents must pay separate costs to send and to receive messages. Equilibrium strategies have an intuitive characterization - those with the best information send, those with the worst information receive. But free-riding leads to less information exchange than is optimal. Testing the model`s predictions with an experiment I find that subjects overcommunicate when costs are high, but fail to benefit from this as much as they should. In welfare terms the experiment finds that listening costs are more harmful to welfare, in contrast with theory, which indicates sending costs. The experiment also suggests that the existence of costly communication channels can reduce total welfare.

Suggested Citation

  • Alistair Wilson, 2012. "Costly Communication in Groups: Theory and an Experiment," Working Paper 499, Department of Economics, University of Pittsburgh, revised Feb 2014.
    • Handle: RePEc:pit:wpaper:499
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    References listed on IDEAS

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    Cited by:

    1. Dietrichson, Jens & Gudmundsson, Jens & Jochem, Torsten, 2014. "Let's Talk It Over: Communication and Coordination in Teams," Working Papers 2014:2, Lund University, Department of Economics, revised 18 Apr 2018.
    2. Lafky, Jonathan & Wilson, Alistair J., 2020. "Experimenting with incentives for information transmission: Quantity versus quality," Journal of Economic Behavior & Organization, Elsevier, vol. 169(C), pages 314-331.
    3. Gary Charness & David J. Cooper & Zachary Grossman, 2020. "Silence is golden: team problem solving and communication costs," Experimental Economics, Springer;Economic Science Association, vol. 23(3), pages 668-693, September.
    4. Dietrichson, Jens & Gudmundsson, Jens & Jochem, Torsten, 2022. "Why don’t we talk about it? Communication and coordination in teams," Journal of Economic Behavior & Organization, Elsevier, vol. 197(C), pages 257-278.
    5. Jimmy Chan & Alessandro Lizzeri & Wing Suen & Leeat Yariv, 2018. "Deliberating Collective Decisions," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 85(2), pages 929-963.
    6. Charness, Gary & Cooper, David & Grossman, Zachary, 2015. "Silence is Golden: Communication Costs and Team Problem Solving," University of California at Santa Barbara, Economics Working Paper Series qt3n25b620, Department of Economics, UC Santa Barbara.

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    More about this item

    JEL classification:

    • C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
    • C92 - Mathematical and Quantitative Methods - - Design of Experiments - - - Laboratory, Group Behavior
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness
    • D84 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Expectations; Speculations

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