resources available to interpret and define these opportunities. Finally, the sociopolitical school stresses the role of network …

We explore network effects on generosity for different network dimensions. To this end we elicit multiple network … matters for friendship ties but that structural network variables are important in all network dimensions. Importantly, these … effects are not invariant across different network dimensions. We also find that individual characteristics are unrelated with …

A symmetric network consists of a set of positions and a set of bilateral links between these positions. Examples of … symmetric network we define a cooperative transferable utility game that measures the power of each coalition of positions in … the network. Applying the Shapley value to this game yields a network power measure, the beta-measure, which reflects the …

In this paper we test the celebrated `Strength of weak ties' theory of Granovetter (1973). We test two hypotheses on … the network structure in a data set of collaborating economists. While we find support for the hypothesis of transitivity … star structure with strong ties between the stars. In such a world, strong ties are more important than weak ties. …

effects, a class that includes the 'linear-in-means' local average model, the local aggregate model, and models where network …/quasi-experimental data. We then discuss models of network formation, drawing on a range of literatures to cover purely predictive models …

We explore network effects on generosity for different network dimensions. To this end we elicit multiple network … matters for friendship ties but that structural network variables are important in all network dimensions. Importantly, these … effects are not invariant across different network dimensions. We also find that individual characteristics are unrelated with …