We use comparable micro level panel data for 14 countries and a set of identically specified empirical models to investigate the relationship between exports and productivity. Our overall results are in line with the big picture that is by now familiar from the literature: Exporters are more...

We review and condense the body of literature on the economic returns of public R&D on private R&D and find that: (i) private returns to R&D appear to be large and larger than the returns to alternative investments; (ii) private R&D and R&D subsidies are positively correlated and there is no...

We compare individuals presently employed either at an university or at a firm from a R&D intensive sector and analyze which of their personal-specific and employer-specific characteristics determine their choice of subsequently founding a startup. Our data set is unusually rich and combines the...

How valuable is work experience with advocacy groups, e.g. Greenpeace, for new hires of innovative firms? We integrate strategic human capital with stakeholder theory and suggest that this experience creates scarce human capital (knowledge, skills, abilities) facilitating innovations acceptable...

Summary Virtually all empirical firm-level studies on the demand for heterogeneous labor do not include labor cost in the econometric specification. This is due to the fact that business and innovation survey data usually lack differentiated information on labor cost. This paper shows how...

This paper provides empirical evidence for the widespread belief that a magazine's companion website induces channel competition on its print version. The analysis is based on aggregated quarterly magazine-specific data on circulation, a broad variety of magazine characteristics, consumer...

Die aktuelle Diskussion um die Novellierung der deutschen Pressefusionskontrolle macht deutlich, welche Relevanz medienökonomische Fragestellungen haben. Was jedoch bei dieser Diskussion häufig vernachlässigt wird, ist die intensive Betrachtung der ökonomischen Besonderheiten von...

Researchers in Germany have nowadays access to confidential micro data compiled from official statistics in a way that could not have been dreamt of just a few years ago. This paper describes the new institutions that grant data access - most importantly the research data centers located inside...

I derive and estimate a model for profit maximization of German magazines. Quarterly data on German women's magazines observed between 1998 and 2001 are used in the econometrics. Main empirical results are that magazines with particularly circulation-sensitive advertising prices set cover prices...