into account the potential externalities networks produce. Once social ties are in place, these externalities shape the … that the individual's incentives depend on the architecture of the network as well as on the position of the individual … within the network. In particular, when an efficient interaction requires players to mutually cooperate, efficient social …

The paper analyzes a dynamic model of rational strategic learning in a network. It complements existing literature by … network. We show that the delay in information transmission caused by incomplete network structures may induce players to … increase own experimentation efforts. As a consequence a complete network can fail to be optimal even if there are no costs for …

We develop a network model whose links are governed by banks' optmizing decisions and by an endogenous tâtonnement … evolution of the network configuration under various prudential policy regimes, to measure banks' contribution to systemic risk …

We study lobbying in a setting in which decision-makers share resources in a network. Two opposing interest groups …-makers' ideologies as well as the network structure. We characterize the lobbying strategies in various network settings and show that a …' efforts do not neutralize each other and their payoffs and competitive advantages depend on the networks they face. Our …

We analyze R&D collaboration networks in industries where firms are competitors in the product market. Firms' benefits … characterization of both equilibrium networks and endogenous production choices in the form of a Gibbs measure. We analyze the … efficient network maximizing social welfare, and find that the efficient graph is either empty, complete or shows a strong core …

neighbors in the social network. The same activities often exert externalities that cumulate 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 …