Caltech Logo

Ulric B. and Evelyn L. Bray Social Sciences Seminar

Wednesday, October 7, 2020
12:00pm to 1:00pm
Add to Cal
Online Event
The Politics of News Personalization
Anqi Li, Assistant Professor, Department of Economics, Washington University in St. Louis,

Abstract: We study how news personalization affects policy polarization. In a two-candidate electoral competition model, an attention-maximizing infomediary aggregates information about candidate valence into news. Voters decide whether to consume news, trading off the expected utility gain from improved expressive voting against the attention cost. Broadcast news serves a broad and balanced audience with a symmetric signal. Personalized news serves extreme voters with skewed signals featuring own-party bias and occasional big surprise. Rational news aggregation generates policy polarization even between office-motivated candidates. Personalization makes extreme voters the disciplining entity for policy polarization and increases policy polarization mainly through occasional big surprise.

Written with Lin Hu and Ilya Segal.

How to view the seminar:
Sign up for a free twitch.tv account, and tune in on Wednesdays at noon pacific time on twitch.tv/caltechecontheory. You will be able to ask questions on the twitch chat.

For more information, please contact Letty Diaz by phone at 626-395-1255 or by email at letty.diaz@caltech.edu.