I look at the equilibrium effects of homophily in network formation games having positive externalities. I show that … very weak preferences for network effects (such as preference for being part of a clique) may result in very high levels of … homophily at equilibrium. I present an empirical procedure that allows an evaluation of the role of network effects on the …

This paper proposes new centrality measures to characterise the 'key class', when agents in a network are sorted into … role-equivalent classes, such that its removal results in an optimal change in the network activity. The notion of role … theoretical applicability. Players in the network engage in a non-cooperative game with local payoff complementarities. We …

many well-known results from the contest literature can be obtained by varying the structure of the network. Our framework …

We provide an overview and synthesis of the literatures analyzing games in which players are connected via a network … structure. We discuss, in particular, the impact of the structure of the network on individuals' behaviors. We focus on game …

placing its data on others’ storage devices, given the prevailing data loss rate in the network. The cost function of an agent … captures the cost that the agent incurs to maintain links in the network. With this utility function, we analyze what network … exists a pairwise stable network, which is also efficient. We show that all pairwise stable networks are efficient, and hence …

Theoretical models on network formation focus mostly on the stability and efficiency of equilibria, but they cannot … starting network. To study factors affecting equilibrium selection, we designed a network formation experiment with multiple … stage in which the network is disrupted. This setting allows us to analyze the interplay between the need for farsightedness …

This paper analyses the private provision of public goods where agents interact within a fixed network structure and … the concept of k-insulated set, any network supports a Nash equilibrium with no intermediate contributors. …

We develop a model of social preferences for network games and study its predictions in a local public goods game with … a property of the network structure: neighborhood nestedness. This means that equilibrium selection succeeds in small …

own experimentation, so total information decreases with network density; we determine density thresholds below which … agents asymptotically learn the state. In contrast, agent welfare is single-peaked in network density, and achieves a second …

neighbors in the social network. The same activities often exert externalities that cummulate in 'stocks' affecting agents … network of social relations, as agents display strategic substitution with distance-two neighbors. We show that behavior is … behavior and key-players tend to move to the periphery of the network, and we discuss the effect of close-knit communities and …