Tong Li (Vanderbilt)

"A Partial Identification Subnetwork Approach to Discrete Games in Large Networks: An Application to Quantifying Peer Effects"

Oct 22, 2018
from 03:40 PM to 05:00 PM

1131 Social Science and Humanities Gold room


This paper studies identification and estimation of discrete games in large networks, with an application to peer effects on smoking in friend networks. Due to the presence of multiple equilibria, the model is not point identified. We adopt the partial identification approach by constructing moment inequalities on choice probabilities of subnetworks. Doing so not only significantly reduces the computational cost, but also enables us to find consistent estimator of the moment conditions even when the network is large and the friendship relationship structure varies significantly among networks. Monte Carlo studies are conducted to evaluate the performance of the subnetwork approach. In the application using the Add Health data, we find significant and positive peer effects on smoking.



Seminar is open to the public, space is limited.
Filed under: Econometrics