Theory predicts a positive relationship between market concentration and profitability in most scenarios. In empirical work, however, this relation is frequently not found or only a weak connection is observed. We compare the performance of concentration and market share variables, which are...

This paper investigates if significant differences exist between online and paper & pencil participants in a quarterly business survey in the German business-related services sector when respondents may freely choose to respond either online or by more conventional methods. It also analyzes the...

Digital designs - that is, designs for display on electronic screens - have recently burst onto the intellectual property (IP) stage. While in the U.S. a smattering of legal studies have recently addressed the question of digital design as a copyright-, trademark- and patent-eligible subject...

Increasing participation rates in pupil surveys has become an important challenge for empirical educational research. In this paper we investigate whether combining a monetary incentive with a personalised invitation to participate in a survey increases the response rate of secondary school...