This paper explores how consumers react towards price differentiation between on-net and off-net calls in mobile telecommunications - a pricing policy that is common in many mobile telecommunications markets. Based on a survey of 1044 students we demonstrate that some consumers may suffer from a...

This paper studies competition in the German market for mobile telecommunications, motivated by recent suggestions that T-Mobile and Vodafone possess a position of collective dominance. Allegedly, their position of joint dominance is secured through a combination of first-mover advantages and...

This paper offers a new and broad insight into the landscape of German cartels, utilizing a unique dataset of all illegal horizontal cartels detected by the German Federal Cartel Office (FCO) between 1958 and 2004 and all legal cartels authorized during the same time period. We also provide the...

Price levels and movements on gasoline and diesel markets are heavily debated among consumers, policy-makers, and competition authorities alike. In this paper, we empirically investigate how and why price levels differ across gasoline stations in Germany, using eight months of data from a novel...

Im September 2011 hat das Bundeskartellamt eine Sektoruntersuchung des Lebensmitteleinzelhandels nach §32 e GWB eingeleitet. Im Fokus der Untersuchung sollten "die Wettbewerbsbedingungen auf den Märkten für die Beschaffung von Nahrungs- und Genussmitteln durch die Unternehmen des...

Der Bau von Moscheen in deutschen Großstädten ist in Öffentlichkeit und in Medien in den letzten Jahren sehr kontrovers und teilweise heftig diskutiert werden. Bereits die Ankündigung einer geplanten Errichtung einer großen Moschee hat zu teilweise grotesk anmutenden Abwehrreaktionen...

Im Zuge der von der Energiewende wird zunehmend die Frage diskutiert, wie bei einem forcierten Ausbau der erneuerbaren Energien und der dadurch zunehmenden Fluktuation der Stromerzeugung die Versorgungssicherheit gewährleistet werden kann. Zur Diskussion steht die Einführung von...

This paper estimates demand elasticities for the Turkish mobile telecommunication market. In contrast to most other studies, firm level data is used to estimate dynamic panel data models including instrumental variable techniques. Both short- and long-run elasticities are calculated, yielding a...

This is the first paper that studies the causal effect of studying economics on subjective well being. Based on a survey among 918 students of economics and other social sciences, we estimate the effects of studying in the different fields on individual life satisfaction. Controling for personal...