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Contests with Network Externalities: Theory & Evidence

Luke Boosey and Christopher Brown ()
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Christopher Brown: Krannert School of Management, Purdue University

Working Papers from Department of Economics, Florida State University

Abstract: We study competitive behavior in all-pay Tullock (1980) contests with identity-dependent externalities (IDEs) governed by a fixed network. First, we introduce a model of network contest games, in which the prize generates an externality---which may be positive or negative---that impacts each player directly connected by the network to the winner of the contest. We establish existence of Nash equilibria and provide sufficient conditions for uniqueness, building on recent theoretical advances for games played on networks. We then derive closed-form results, with an intuitive characterization, for regular networks and for a subclass of core-periphery structures. Second, using a controlled laboratory experiment, we provide robust empirical support for the comparative statics predictions of the model. Our experimental findings also suggest that observed patterns of mean over-investment relative to point predictions may be driven by both heterogeneous joy of winning and social efficiency concerns that emerge in the presence of IDEs. Altogether, our study provides a novel application for the theory of network games, and new insights regarding behavior in all-pay contests.

Keywords: contests; networks; identity-dependent externalities; network games; best-response potential; experiment; joy of winning (search for similar items in EconPapers)
JEL-codes: C72 C92 D72 D74 D85 Z13 (search for similar items in EconPapers)
Pages: 68
Date: 2021-07
New Economics Papers: this item is included in nep-exp, nep-gth, nep-net and nep-ore
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