Antitrust & Competition Policy Blog

Editor: D. Daniel Sokol
University of Florida
Levin College of Law

Monday, August 20, 2012

Screening for Collusion: A Spatial Statistics Approach

Posted by D. Daniel Sokol

Pim Heijnen, University of Groningen , Marco A. Haan, University of Groningen, and Adriaan R. Soetevent, University of Amsterdam - Amsterdam School of Economics, Tinbergen Institute offer up thoughts on Screening for Collusion: A Spatial Statistics Approach.

ABSTRACT: We develop a method to screen for local cartels. We first test whether there is statistical evidence of clustering of outlets that score high on some characteristic that is consistent with collusive behavior. If so, we determine in a second step the most suspicious regions where further antitrust investigation would be warranted. We apply our method to build a variance screen for the Dutch gasoline market.

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