causal effects is challenging. We identify causal WOM effects in the empirical setting of game adoption in a social network … for gamers by exploiting differences in individuals’ networks. Friends of friends do not directly influence a focal user … receiver side. We find that users with the most influence on others tend to be better gamers, have larger social networks, but …

We introduce a simple two-stage game of endogenous network formation and information sharing for reasoning about the … optimal design of social networks like Facebook or Google+. We distinguish between unilateral and bilateral connections and … then we study how the network design and the utility specifications affect welfare. Surprisingly, we find that in general …

-in-means model where each individual has his own specific reference group. Interactions are thus structured through a social network … exogenous effects are generally identified under network interaction, although identification may fail for some particular … structures. Monte Carlo simulations provide an analysis of the effects of some crucial characteristics of a network (i …

map co-worker networks and skill composition. This unique combination of data and features allows us to quantify global … with extensive local networks typically have related skills to others in the region and to their co-workers. Workers with … composition of skills within knowledge intensive firms by connecting the geography of networks contacts to the diversity of skills …

This paper develops strategic foundations for an important statistical model of random networks with heterogeneous … fragmented, sparse equilibrium networks to connected, dense ones when the value of friends of friends crosses a cost …

infrastructures. We find that all the proxies of trust significantly decrease with participation in online networks. We discuss …