The statement institutions matter has become commonplace. A precondition for it to be supported by empirical evidence, is, however, that institutions are measurable. Glaeser et al. (2004) attacks many studies claiming to prove the relevance of institutions for economic development as being based...

I argue that the rule of law consists of many dimensions and that much information is lost when variables proxying for these dimensions are simply aggregated. I draw on the most important innovations from various legal traditions to propose a concept of the rule of law likely to find general...

Advanced economic instruments like simulation models are enjoying an increased popularity in practical antitrust. There is hope that they being quantitative predictive economic evidence can substitute for qualitative structural analysis and lead to unambiguous results. This paper demonstrates...

Advances in competition economics as well as in computational and empirical methods have offered the scope for the employment of merger simulation models in merger control procedures during the past almost 15 years. Merger simulation is, nevertheless, still a very young and innovative instrument...

Although both in US antitrust and European competition law there is a clear evolution to a much broader application of rule of reason (instead of per-se rules), there is also an increasing awareness of the problems of a case-by-case approach. The error costs approach (minimizing the sum of...

This paper provides a theoretic model for the analysis of cartel formation in an industry that is subject to profit shocks. The competitive or collusive conduct of a firm is determined by a decision maker who maximizes the present value of utility that accrues to him by earning a share of the...

The firms that compete with one another in terms of innovation do not necessarily coincide with the relevant competitors on pre-innovation product markets. As a consequence, the findings about the ambiguous interrelation between (product) market concentration and innovation cannot be transferred...

A merger between two innovation competitors is often suspected to reduce the variety of heterogeneous entities which are currently undertaking R&D or which are well situated to undertake R&D in a certain field. The consequential reduction of diversity can be detrimental to innovation because it...

The relevant competitors in regard to innovation might, but not necessarily do, correspond to the identified competitors on actual product markets. Hence, the conventional analysis of product markets, in order to assess the potential anticompetitive effects of mergers, is insufficient to capture...

In this empirical study all mergers that have been challenged by the U.S. antitrust agencies FTC and DOJ between 1995 and 2008 were analyzed in regard to the question to what extent and how the agencies assessed the innovation effects of mergers. Theoretical background is the still open question...