This paper investigates why consumers choose calling plans that are not always cost-minimizing. Our approach is twofold: we account for general difficulties facing a tariff choice, as well as for biased preferences. We provide evidence from an experiment among German university students and...

This paper investigates why consumers choose calling plans that are not always cost-minimizing. Our approach is twofold: we account for general difficultiesfacing a tariff choice, as well as for biased preferences. We provide evidence froman experiment among German university students and staff,...

This thesis focuses on two distinct fields: the health care and the telecommunications sector. One the one hand, it deals with rebate contracts in the health care sector. The aim of this thesis is to analyze different forms and aspects of rebate contracts. We answer the question, are rebate...

Group Purchasing Organizations (GPOs) increasingly gain in importance with respect to the supply of pharmaceutical products and frequently use multiple or exclusive rebate contracts to exercise market power. Based on a Hotelling model of horizontal and vertical product differentiation, we...

The increasing usage of mobile communication and the declining demand for fixed line telephony in Europe make the analysis of substitutional effects between fixed and mobile networks a key aspect for future telecommunication regulation. Using a unique dataset which contains information on all 27...

The increasing usage of mobile communication and the declining demand for fixed line telephony in Europe make the analysis of substitutional effects between fixed and mobile networks a key aspect for future telecommunication regulation. Using a unique dataset which contains information on all 27...