We exploit a unique sample to analyze how homophily (affinity for similar others) and social ties affect career outcomes in banking. We test if these factors increase the probability that the appointee to an executive board is an outsider without previous employment at the bank compared to being...

This paper analyzes job referral effects that are based on residential location. We use georeferenced record data for the entire working population (liable to social security) and the corresponding establishments in the Rhine-Ruhr metropolitan area, which is Germany's largest (and EU's second...

Oft wird unterstellt, dass die intensive Nutzung des Internets die Menschen in der realen Welt zu kontaktarmen Sonderlingen macht. Auf Vertrauen basierende Kontakte erleichtern aber in vielerlei Hinsicht den Austausch zwischen Individuen und haben daher greifbare ökonomische Konsequenzen. Ein...

On Wikipedia, the largest online encyclopedia, editors who contribute to the same articles and exchange comments on articles’ talk pages work in collaborative manner engaging in communication about their work. Thus they can be considered as peers who are likely to influence each other. In this...

Im Enzyklopädieprojekt Wikipedia kooperieren hunderttausende Menschen; sie kommen mit einem minimalen Aufwand an Koordination aus. Das Ergebnis ist ein öffentliches Gut, das oft sogar traditionellen Nachschlagewerken überlegen ist. Klassische Theorien der Kooperation, wie Eigennutz oder...

This paper tests the importance of social contacts on entrepreneurship. To measure differences in the interconnectedness of social contacts, we compare rural and agglomerated areas. A smaller community size in rural areas generates greater network closure. Agents' neighborhoods are more likely...