Joseph Harrington is the Patrick T. Harker Professor at The Wharton School of the University of Pennsylvania. His research on collusion and cartels has been published in leading economic and law journals for which he has received several awards including the Antitrust Writing Award for Best Concerted Practices and Honorable Mention for the Jerry S. Cohen Memorial Fund Writing Award for antitrust scholarship. He is the author or co-author of Economics of Regulation and Antitrust, How Do Cartels Operate?, The Theory of Collusion and Competition Policy, and, most recently, Hub-and-Spoke Cartels: Why They Form, How They Operate, and How to Prosecute Them.