Social Networks with Unobserved Links

Arthur Lewbel, Xi Qu and Xun Tang

Journal of Political Economy, 2023, vol. 131, issue 4, 898 - 946

Abstract: We point-identify and estimate linear social network models without observing any network links. The required data consist of many small networks of individuals, such as classrooms or villages, with individuals who are each observed only once. We apply our estimator to data from Tennessee’s Project STAR (Student-Teacher Achievement Ratio). Without observing the latent network in each classroom, we identify and estimate peer and contextual effects on students’ performance in mathematics. We find that peer effects tend to be larger in bigger classes and that increasing peer effects would significantly improve students’ average test scores in some classes.

Date: 2023
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Working Paper: Social Networks with Unobserved Links (2022)
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