This article outlines a model of how social interactions among persons belonging to the same region might influence the individual unemployment duration. The impact is assumed to be enhanced through social work norms shared by peers within the group. Building on a range of German data sets and...

This article aims to summarize the existing body of literature on social interactions and their effect on individual unemployment status. Two directions of the ongoing research are analyzed: the impact of social norms on unemployment and the importance of social networks in the job search...

Learned societies commonly carry out selection processes to add new fellows to an existing fellowship. Criteria vary across societies but are typically based on subjective judgments concerning the merit of individuals who are nominated for fellowships. These subjective assessments may be made by...

Using unique data on criminal profiles of 800 US Mafia members active in the 50s and 60s and on their connections within the Cosa Nostra network we analyze how the geometry of criminal ties between mobsters depends on family ties, community roots and ties, legal and illegal activities. We...

We analyze delinquent networks of adolescents in the United States. We develop a theoretical model showing who the key player is, i.e. the criminal who once removed generates the highest possible reduction in aggregate crime level. We also show that key players are not necessary the most active...

The aim of this paper is to provide a new mechanism based on social interactions explaining why distance to jobs can have a negative impact on workers’ labor-market outcomes, especially ethnic minorities. Building on Granovetter’s idea that weak ties are superior to strong ties for providing...