47 Pages Posted: 23 Jul 2016
Date Written: July 22, 2016
Social media have great potential to support diverse information sharing, but there is widespread concern that platforms like Twitter do not result in communication between those who hold contradictory viewpoints. Because users can choose whom to follow, prior research suggests that social media users exist in “echo chambers” or become polarized. We seek evidence of this in a complete cross section of hyperlinks posted on Twitter, using previously validated measures of the political slant of news sources to study information diversity. Contrary to prediction, we find that the average account posts links to more politically moderate news sources than the ones they receive in their own feed. However, members of a tiny network core do exhibit cross-sectional evidence of polarization and are responsible for the majority of tweets received overall due to their popularity and activity, which could explain the widespread perception of polarization on social media.
Keywords: Social media, diversity, homophily, echo chambers, polarization, network analysis, political slant
JEL Classification: D83, D85, M15
Suggested Citation: Suggested Citation
Shore, Jesse and Baek, Jiye and Dellarocas, Chrysanthos, Network Structure and Patterns of Information Diversity on Twitter (July 22, 2016). Boston University Questrom School of Business Research Paper No. 2813342. Available at SSRN: https://ssrn.com/abstract=2813342 or http://dx.doi.org/10.2139/ssrn.2813342