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Either with us or against us: experimental evidence on partial cartels

Georg Clemens () and Holger A. Rau ()
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Georg Clemens: Compass Lexecon
Holger A. Rau: University of Göttingen

Theory and Decision, 2022, vol. 93, issue 2, No 2, 237-257

Abstract: Abstract This paper analyzes the coordination challenge a partial cartel faces when payoff asymmetries between potential cartel insiders and potential cartel outsiders are large. We introduce two experimental treatments: a standard treatment where a complete cartel can be supported in a Nash equilibrium and a modified treatment where a complete cartel and a partial cartel can both be supported in a Nash equilibrium. To assess the role of communication both treatments are additionally run with a “chat option,” yielding four treatments in total. Our results show that subjects frequently reject the formation of partial cartels in the modified treatments. In all treatments with communication subjects are more likely to form complete cartels than partial cartels. The implications of these results are important for antitrust: payoff asymmetries between cartel members and outsiders may jeopardize the formation of partial cartels. Yet complete cartels may be formed instead, if institutional mechanisms with frequent communication are used to form cartels.

Keywords: Communication; Coordination; Experiment; Partial cartels (search for similar items in EconPapers)
JEL-codes: C92 D02 L41 (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1007/s11238-021-09842-z

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