Echo Chambers and Filter Bubbles

It is an unseasonably cold Thursday morning in Hamburg, and after a great opening session last night with Aleksandra Urman, Mykola Makhortykh, and Jing Zeng we are now starting the first full day of the Indicators of Social Cohesion symposium. I’m presenting the morning keynote, on our current work assessing the news and social media debate around Australia’s failed Voice to Parliament referendum as a possible case of destructive polarisation.More on this as the research develops, but for now my slides are here:

The next session at Future of Journalism 2023 conference that I’m attending is on polarisation, so of course I had to check it out; it starts with Mel Bunce and her colleagues’ study of the Media Freedom Coalition. However, they’ve asked for this study not to be tweeted at this stage, so I shall also not blog about it for now.

The fourth speaker in this session at ECREA PolCom 2023 conference is Ana Cardenal, who moves beyond reported to observed behaviour, with a particular focus on selective exposure practices. This combines survey data with Web tracking data across Spain, France, Germany, the US, and the UK.

The next speaker in this IAMCR 2023 session is Marko M. Skoric, whose interest is in incidental exposure to political information on social media. The present study is especially interested in exposure to people of different religions, from the perspective of Pakistani users. Such exposure is also critical to the avoidance of ‘echo chambers’, of course – but the context of such exposure also matters, of course: for instance with respect to the (in)civility of the content that is encountered.

The final presenter in this IAMCR 2023 session is Junjun Yu, whose focus is on information cocoons on Sina Weibo. Such cocoons are theorised as close-off spaces where information circulates in an ideologically and informationally homogeneous environment, potentially facilitated by the algorithms and affordances of social media platforms.

The next speaker in this session at IAMCR 2023 is Svetlana Bodrunova, whose interest is in dynamic polarisation in online discussions. She notes that polarisation has often be confused with the idea of echo chambers, but that our methods have generally overlooked the dynamics of polarisation. A better approach to understanding the idea is to use the concept of cumulative deliberation, which recognises that opinions form online through the gradual accumulation of posts and engagement.

One of the major components of my guest professorship at the University of Zürich in late 2022 was to develop and deliver a one-off undergraduate course on gatewatching and the continuing transformation of journalism as a result of the impact of social media, from the early days of blogs and citizen journalism to the present. This builds on my 2018 book Gatewatching and News Curation: Journalism, Social Media, and the Public Sphere. I also took the opportunity to augment the book's contents with a handful of additional lectures on topics such as 'fake news', fact-checking, 'filter bubbles', and the power of social media platforms - topics that have emerged and grown in importance even further since the book was published.

The lectures were all recorded, and it would be a shame if the material went to waste after it's one-off presentation in Zürich. So, I'm pleased to say that after a little light editing, the 13 weekly lectures from this course are now online, and collected in a handy YouTube playlist. They're each running between 60 and 90 minutes in length, and the slides are also available separately (they're linked from the description of each video). I've listed the full syllabus of readings below.

I hope this is useful, and would love to see these lectures be used in teaching wherever they might suit – for instance in undergraduate journalism, media studies, or social media courses. Please share these materials with anyone who might be able to benefit from them.

As the year and my Guest Professorship here at the Institut für Kommunikationswissenschaft und Medienforschung (IKMZ) at the University of Zürich are coming to an end, here are a handful of final updates hot of the presses.

First, I’m very happy to say that at article about the Russian propaganda organ RT’s audiences on Facebook has just been published in Information, Communication & Society. This was a difficult piece of research not least because it involved coding data in six languages, but I’m delighted to say that we managed to find native speakers of all those languages (Russian, English, Spanish, French, Arabic, and German) in-house at the QUT Digital Media Research Centre. My sincere thanks especially to my excellent colleague Sofya Glazunova for leading this project.

Sofya Glazunova, Axel Bruns, Edward Hurcombe, Sílvia X. Montaña-Niño, Souleymane Coulibaly, and Abdul K. Obeid. “Soft Power, Sharp Power? Exploring RT’s Dual Role in Russia’s Diplomatic Toolkit.” Information, Communication & Society, 21 Dec. 2022. DOI: 10.1080/1369118X.2022.2155485.

Just a few days earlier, a new article about the social media amplification of articles in The Conversation that referred to preprint content relating to the COVID-19 pandemic also came out, in Media International Australia. But I have to stress that I only had limited involvement with this work – most of the heavy lifting was done by DMRC Visiting Scholar Alice Fleerackers (usually of Simon Fraser University) and my DMRC colleague Michelle Riedlinger.

Alice Fleerackers, Michelle Riedlinger, Axel Bruns, and Jean Burgess. “Academic Explanatory Journalism and Emerging COVID-19 Science: How Social Media Accounts Amplify The Conversation’s Preprint Coverage.” Media International Australia, 19 Dec. 2022. DOI: 10.1177/1329878X221145022.

A few months ago my colleague Aljosha Karim Schapals and I also published a new article in Media and Communication that explores how journalists have perceived and reacted to the challenge of ‘fake news’. This was based on Aljosha’s extensive interviews with newsworkers in Australia, the UK, and Germany, and provides some fascinating insights into the journalistic mindset in relation to this critical challenge.