NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Yosh Halberstam

Department of Economics
150 St. George Street, University of Toronto
Toronto, ON M5S 3G7, Canada

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NBER Working Papers and Publications

November 2014Homophily, Group Size, and the Diffusion of Political Information in Social Networks: Evidence from Twitter
with Brian Knight: w20681
In this paper, we investigate political communications in social networks characterized both by homophily–a tendency to associate with similar individuals–and group size. To generate testable hypotheses, we develop a simple theory of information diffusion in social networks with homophily and two groups: conservatives and liberals. The model predicts that, with homophily, members of the majority group have more network connections and are exposed to more information than the minority group. We also use the model to show that, with homophily and a tendency to produce like-minded information, groups are disproportionately exposed to like-minded information and the information reaches like-minded individuals more quickly than it reaches individuals of opposing ideologies. To test the hypothes...

Published: Yosh Halberstam & Brian Knight, 2016. "Homophily, group size, and the diffusion of political information in social networks: Evidence from Twitter," Journal of Public Economics, . citation courtesy of

 
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