We study the diffusion of a true and a false opinion (the rumor) in a social network. Upon hearing an opinion …

We introduce a simple two-stage game of endogenous network formation and information sharing for reasoning about the … then we study how the network design and the utility specifications affect welfare. Surprisingly, we find that in general … "babblers" or "friends", irrespective of whether the network is unilateral or bilateral, in equilibrium, targeted information …

This paper studies a noncooperative model of network formation. Built upon the two-way flow model of Bala and Goyal …

We introduce a simple two-stage game of endogenous network formation and information sharing for reasoning about the … then we study how the network design and the utility specifications affect welfare. Surprisingly, we find that in general … "babblers" or "friends", irrespective of whether the network is unilateral or bilateral, in equilibrium, targeted information …

network of agents. In our model, agents are identically informed a priori and observe network neighbors’ actions as well as … observed payoffs and imitate observed actions. Our results also allow us to interpret critical mass and network brokerage …

in the network is contingent on the accuracy of opinions. Agents have opinions about a state of the world and form links …

Consumers can acquire information through their own search efforts or through their social network. Information … show how market prices depend on the characteristics of the network and on search cost. For example, if the search cost …

efficient network maximizing social welfare, and find that the efficient graph is either empty, complete or shows a strong core … counterfactual analyses, taking into account that the network and production can dynamically adjust to shocks or policy interventions ….6%. Our study further reveals that when ignoring the network structure the impact of firm exit or mergers is significantly …

agents are myopic best responders. We develop a new network measure, the contagion threshold, that determines when a p … show that a p-dominant action spreads to the whole network whenever the contagion threshold of that network is greater or … the long run. This result implies that targeted contagion, a network-wide diffusion of actions initiated by targeting …