Ideological Segregation Online and Offline

Matthew Gentzkow and Jesse Shapiro

The Quarterly Journal of Economics, 2011, vol. 126, issue 4, 1799-1839

Abstract: We use individual and aggregate data to ask how the Internet is changing the ideological segregation of the American electorate. Focusing on online news consumption, offline news consumption, and face-to-face social interactions, we define ideological segregation in each domain using standard indices from the literature on racial segregation. We find that ideological segregation of online news consumption is low in absolute terms, higher than the segregation of most offline news consumption, and significantly lower than the segregation of face-to-face interactions with neighbors, co-workers, or family members. We find no evidence that the Internet is becoming more segregated over time. Copyright 2011, Oxford University Press.

Date: 2011
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Working Paper: Ideological Segregation Online and Offline (2010)
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