In the empirical literature on grocery retailing it is typically assumed that all consumers choose from the full set of products in the market. We develop an approach to formally test this assumption. Our test can be applied to individual-level purchase data. Unlike previous approaches it does...

This paper shows that the correlation between the Net Promoter Score and consumers' Willingness To Pay in five European mobile markets is very strong. The Net Promoter Score is provided by a survey and the Willingness To Pay is calculated using the Spokes Model which is an economic model based...

This paper answers two empirical questions. First, we analyze how fixed-mobile (quadruple-play) bundling impacts retention of consumers in fixed broadband market. Second, we assess how bundling by the incumbent operator impacts the market share and number of entrants who provide broadband...

This article focuses on the location decision of firms when competing in a duopoly. Using a spatial Cournot setting, we evaluate what is the optimal location decision of both firms in the linear city. Our original contribution is that firms are dependent on a natural resource input to be able to...

This paper investigates the existence of a possible media bias by analyzing the impact of automobile manufactures' advertisements on automobile reviews in German car magazines. By accounting for both endogeneity and sample selection we find a positive impact of advertising volumes on test...

Ellison and Glaeser's (1997) index of geographical concentration distinguishes between natural advantages and spillovers as a source of industrial agglomeration, but the well-known 'observational equivalence' means little is known about the relative importance of these. This paper uses the...

This paper provides empirical evidence on the relationship between cross-border acquisitions and innovation activities of the acquirer. For the empirical analysis a unique firm-level data set is constructed that combines survey data for German firms with a merger and acquisition database. After...

We consider dynamic price-setting by firms in the presence of rating systems and asymmetric information about product quality. The current price determines the set of purchasing consumers and thereby affects future ratings and continuation profits. We outline the effects of prices on consumers'...

A vital activity is the issue of creating a knowledge society, which can only be solved by involving all the forces of intellectual, academic, all generators of ideas. The paper is intended as a contribution, along with attempts by other specialists in finding operational solutions and their...

The recent literature has emphasized that government intervention when consumers have quasi-hyperbolic preferences ('bias for the present') over consumption is not welfare-enhancing. This paper introduces a market imperfection (which takes the form of a negative externality) and shows that...