Background: The analysis and interpretation of change in cognitive function test scores after Coronary Artery Bypass Grafting (CABG). Longitudinal studies with multiple outcomes present considerable statistical challenges. Application of hierarchical linear statistical models can estimate the...

Most markets are characterized by imperfections, mostly market power and limited information. Under these circumstances, intermediaries like real estate agents and insurance brokers play an important role in the economy by facilitating exchange between third parties. As specialized entities they...

Effizienz als Leitbild der Wettbewerbspolitik: Für einen more economic approach" Die jüngsten Reformen im Europäischen Wettbewerbsrecht geben Anlaß, sich erneut mit Grundsatzfragen der Wettbewerbspolitik zu beschäftigen. Unter Rückgriff auf die moderne Wettbewerbstheorie, die Industrie-...

In Economics, as in any social science, empirical tests of theoretical results face a problem: researchers are unable to reproduce the whole economy (or at least its relevant parts) in their laboratories. Nowadays, Experimental Economics uses stylized experiments, drawing on the experience of...

This is the first study that assesses the economic effects of direct democratic institutions on a cross country basis. Most of the results of the former intra-country studies could be confirmed. On the basis of some 30 countries, a higher degree of direct democracy leads to lower total...

The purpose of the paper is (1) to analyze the incentives for a vertically integrated input monopolist to engage in price-discrimination when there is downstream entry, and (2) to examine the question, whether a cost-based regulation of access charges for electricity grids enhances competition...

Judgment proof injurers can be expected to take less than optimal precaution, as they bear only a part of the accident loss. However, it has been showed that under certain conditions the judgment proof problem can lead to overprecaution. We argue that overprecaution can never occur in magnitude...

Can "competition of competition laws" be a feasible concept that should play an important role in an international order for the worldwide protection of competition? We introduce four different types of regulatory competition that allow for a more differentiated analysis of beneficial and...

Should loss of earnings be compensated? The established law and economics wisdom considers pure economic loss as a transfer of wealth from the victim to a third party, whose earnings increase as a consequence of the accident. Such transfers do not amount to a social loss and, hence, should not...

In dem Paper wird untersucht, wann ein vertikal integrierter Netzbetreiber einen Anreiz hat, durch Fordern hoher Netznutzungsentgelte den Wettbewerb im nachgelagerten Produktmarkt zu beschränken. Außerdem wird geprüft, ob und wie eine kostenorientierte Regulierung der Netznutzungsentgelte den...