Evaluating the Scale, Growth, and Origins of Right-Wing Echo Chambers on Youtube
Evaluating the scale, growth, and origins of right-wing echo chambers on YouTube Homa Hosseinmardi,1 Amir Ghasemian,2, 3 Aaron Clauset,4, 5, 6 David M. Rothschild,7 Markus Mobius,8 and Duncan J. Watts1 1University of Pennsylvania, Philadelphia, PA 19104 2Department of Statistics, Harvard University, Cambridge, MA 02138 3Department of Statistical Science, Fox School of Business, Temple University, Philadelphia, PA 19122 4Department of Computer Science, University of Colorado, Boulder, CO 80309 5BioFrontiers Institute, University of Colorado, Boulder, CO 80303 6Santa Fe Institute, Santa Fe, NM 87501 7Microsoft Research New York, 300 Lafayette St, New York, NY 10012 8Microsoft Research New England, 1 Memorial Dr., Cambridge, MA 02142 Although it is understudied relative to other social media platforms, YouTube is arguably the largest and most engaging online media consumption platform in the world. Recently, YouTube's outsize influence has sparked concerns that its recommendation algorithm systematically directs users to radical right-wing content. Here we investigate these concerns with large scale longitudinal data of individuals' browsing behavior spanning January 2016 through December 2019. Consistent with previous work, we find that political news content accounts for a relatively small fraction (11%) of consumption on YouTube, and is dominated by mainstream and largely centrist sources. However, we also find evidence for a small but growing \echo chamber" of far-right content consumption. Users in this community show higher engagement and greater \stickiness" than users who consume any other category of content. Moreover, YouTube accounts for an increasing fraction of these users' overall online news consumption. Finally, while the size, intensity, and growth of this echo chamber present real concerns, we find no evidence that they are caused by YouTube recommendations.
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