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how network structure influences information aggregation. We develop a model of semi-Bayesian learning on networks, which …-village patterns of learning relate to different network structures, which we show are borne out in the data. We apply our findings to …
Persistent link: https://www.econbiz.de/10010796687
grows large. Under truthful communication, we show that asymptotic learning occurs if (and under some additional conditions … equilibrium when the communication network induces asymptotic learning. Moreover, we contrast equilibrium behavior with a socially … communication networks that lead to asymptotic learning. Our result shows that societies with too many and sufficiently large social …
Persistent link: https://www.econbiz.de/10008674240
The Schelling model of a "tipping point" in racial segregation, in which whites flee a neighborhood once a threshold of nonwhites is reached, is a canonical model of strategic interdependence. The idea of "tipping" explaining segregation is widely accepted in the academic literature and popular...
Persistent link: https://www.econbiz.de/10004980318
We provide a framework for studying the relationship between the financial network architecture and the likelihood of systemic failures due to contagion of counterparty risk. We show that financial contagion exhibits a form of phase transition as interbank connections increase: as long as the...
Persistent link: https://www.econbiz.de/10011163838
This chapter develops a unified framework for the study of how network interactions can function as a mechanism for propagation and amplification of microeconomic shocks. The framework nests various classes of games over networks, models of macroeconomic risk originating from microeconomic...
Persistent link: https://www.econbiz.de/10011165122
We define a general class of network formation models, Statistical Exponential Random Graph Models (SERGMs), that nest standard exponential random graph models (ERGMs) as a special case. We provide the first general results on when these models' (including ERGMs) parameters estimated from the...
Persistent link: https://www.econbiz.de/10010796660
We use a network model of credit risk to measure market expectations of the potential spillovers from a sovereign default. Specifically, we develop an empirical model, based on the recent theoretical literature on contagion in financial networks, and estimate it with data on sovereign credit...
Persistent link: https://www.econbiz.de/10010950701
Shareholder valuations are economically and statistically positively correlated with more powerful independent directors, their power gauged by social network power centrality measures. Sudden deaths of powerful independent directors significantly reduce shareholder value, consistent with...
Persistent link: https://www.econbiz.de/10010951070
Social and economic networks are ubiquitous, serving as contexts for job search, technology diffusion, the accumulation …
Persistent link: https://www.econbiz.de/10010951162
Can we identify the members of a community who are best- placed to diffuse information simply by asking a random sample of individuals? We show that boundedly-rational individuals can, simply by tracking sources of gossip, identify those who are most central in a network according to "diffusion...
Persistent link: https://www.econbiz.de/10010951208