Publication detail

Collusion in Multi-object Auctions: Experimental Evidence

Author(s): PhDr. Lubomír Cingl Ph.D.,
Mgr. Jindřich Matoušek Ph.D.,
Type: IES Working Papers
Year: 2015
Number: 20
ISSN / ISBN:
Published in: IES Working Papers 20/2015
Publishing place: Prague
Keywords: Combinatorial Auction, Communication, Collusion, Experiment
JEL codes: C91, D43, D44, D83
Suggested Citation: Matousek J., Cingl L. (2015). “ Collusion in Multiobject Auctions: An Experimental Evidence” IES Working Paper 20/2015. IES FSV. Charles University.
Grants: GDN 2014 - An Experimental Test of Design Alternatives for Spectrum Auctions with Communication Channels
Abstract: multi-unit auction mechanisms in the presence of an opportunity to collude among bidding participants due to a provision of a simple communication channel. The results suggest that the combinatorial bidding format does not bring higher efficiency. Allowing for communication increases efficiency in both examined auction formats. Bidders are able to split the auctioned goods in a cheap-talk collusive agreement, which results in a better allocation compared to the auction formats without the communication channel. Combinatorial bidding on packages makes the decision-making problem of bidders hard to process and cause inefficiencies, especially for designs with the large number of auctioned goods.
Downloadable: wp_2015_20_matousek_cingl

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