Echo chambers and online radicalism: assessing the Internet's complicity in violent extremism

O'Hara, Kieron and Stevens, David (2015) Echo chambers and online radicalism: assessing the Internet's complicity in violent extremism. Policy & Internet, 7 (4). pp. 401-422. ISSN 1944-2866

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This article considers claims made by various authors that the use of filtering and recommendation technology on the Internet can deprive certain communities of feedback, and instead amplify groups' viewpoints, leading to polarization of opinion across communities, and increases in extremism. The ‘echo chamber’ arguments of Cass Sunstein are taken as representative of this point of view, and examined in detail in the context of a range of research, theoretical and empirical, quantitative and qualitative, in political science and the sociology of religion, from the last quarter century. The conclusion is that the case has not been made either (a) that echo chambers are necessarily harmful, or (b) that the Internet is complicit in their formation.

Item Type: Article
Additional Information: This is the peer reviewed version of the following article: O'Hara, K. and Stevens, D. (2015), Echo Chambers and Online Radicalism: Assessing the Internet's Complicity in Violent Extremism. Policy & Internet, 7: 401–422. doi: 10.1002/poi3.88 which has been published in final form at This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Keywords: Extremism; Radicalism; Internet; Echo Chambers; Public forums; Networks
Schools/Departments: University of Nottingham, UK > Faculty of Social Sciences > School of Politics and International Relations
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Depositing User: Eprints, Support
Date Deposited: 27 Sep 2016 09:37
Last Modified: 04 May 2020 17:06

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