This is a survey of the economic principles that underlie antitrust law and how those principles relate to competition policy. We address four core subject areas: market power, collusion, mergers between competitors, and monopolization. In each area, we select the most relevant portions of...

This article examines the economic consequences of collusion in both the output market and one of the input markets. We examine the results of sequential collusion, which leads to complications and inconsistencies in measuring antitrust damages. We also examine simultaneous collusion in both the...