When contributing content on large online platforms, producers of user-generated content have to decide where to contribute. On a complex and dynamic platform like wikipedia, this decision is expected to depend on the way the content is organized. We analyse whether the hyperlinks on Wikipedia...

I quantify spillovers of attention in a network of content pages, which is challenging, because such networks form endogenously. I exploit exogenous variation in the article network of German Wikipedia to circumvent this problem. Wikipedia prominently advertises one featured article on its main...

According to school entry regulations in most countries, the composition of school entrance cohorts is determined by a fixed cutoff date. This procedure creates inter-cohort differences in age and development which can severely influence educational trajectories. Developmental examinations at...

The paper analyses alternative investment policies and their consequences for the evolution of human capital in Europe based on a model of age dependent skill formation where the life span depends on investments during childhood. What makes the approach special is the analysis of the returns to...

Applying a differences-in-differences strategy, I study the decentralization of university admission as a natural experiment. Is the centralized or decentralized procedure better suited to match prospective students to universities? The analysis uses administrative data on all students within...

Human capital contracts give private investors the right to a share of students' future earnings in return for a fi nancial contribution during their studies. Although still rarely used, human capital contracts could not only help to complement limited public funding for higher education but...

German Abstract: Die vorliegende Studie ist unseres Wissens die erste Studie für Deutschland, die die langfristigen Wirkungen eines Studiums ohne Abschluss auf drei Arbeitsmarktergebnisse (Arbeitszeit, Stundenlohn und berufliches Prestige) sowie auf die allgemeine Lebenszufriedenheit, basierend...

When estimating the determinants of child care participation, the simultaneity in mothers' decision to work and in the decision to use child care is a major challenge. In this study, we provide evidence on the determinants of institutional child care use accounting for the endogeneity of...

The German dual apprenticeship system came under pressure in recent years because enterprises were not willing to offer a sufficient number of apprenticeship positions. A frequently made argument is that the gap could be closed if more firms would be willing to incur net costs during the...