We study spillover effects within co-offending networks by leveraging deaths of co-offenders for causal identification. Our results demonstrate that the death of a co-offender significantly reduces the criminal activities of other network members. We observe a decaying pattern in the magnitude...

In this paper we relate a particular form of social interactions, i.e. peer group influences, to the structure of the network from which they originate. Using an extremely detailed dataset on friendship relationships between students from U.S. school, we find evidence suggesting that the...

We analyse the effect of strong and weak ties on the individual probability of finding a job. Using the dynamic model of Calvó-Armengol and Jackson (2004), two results are put forward: (i) the individual probability of finding a job is increasing in the number of strong and weak ties; (ii) the...