Impact Evaluation of Merger Control Decisions
48 Pages Posted: 23 Nov 2011 Last revised: 22 Aug 2012
Date Written: August 17, 2012
This paper provides a comparative analysis of methods for the empirical ex post evaluation of merger control decisions. It develops a competition-policy oriented framework of assessment criteria for the leading evaluation methods and applies them to structural modeling and simulation, differences-in-differences methods, event studies as well as survey-based methods. It concludes that a method-mix is recommendable, however, under the exclusion of event studies that fail to secure a minimum level of reliability regarding the evaluation results. Furthermore, it warns against overly optimistic expectations about the effects of systematic impact evaluations of merger decisions.
Keywords: empirical methods of industrial organization, merger control, competition policy, antitrust decisions, comparative analysis
JEL Classification: C18, C54, L41, L40, K21
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