The Results of the Prosocial Ranking Challenge with Jonathan Stray
This is a seminar presentation by Jonathan Stray on the results of the Prosocial Ranking Challenge, a 10,000 person experiment that shows its possible to reduce polarization without reducing engagement.
Learn more on this blog post: https://rankingchallenge.substack.com/p/its-possible-to-reduce-polarization
Or read the research paper: https://arxiv.org/abs/2603.19626
The Abstract: We report the first direct comparisons of multiple alternative social media algorithms on multiple platforms on outcomes of societal interest. We used a browser extension to modify which posts were shown to desktop social media users, randomly assigning 9,386 users to a control group or one of five alternative ranking algorithms which simultaneously altered content across three platforms for six months during the US 2024 presidential election. This reduced our preregistered index of affective polarization by an average of 0.03 standard deviations (p < 0.05), including a 1.5 degree decrease in differences between the 100 point inparty and outparty feeling thermometers. We saw reductions in active use time for Facebook (-0.37 min/day) and Reddit (-0.2 min/day), but an increase of 0.32 min/day (p < 0.01) for X/Twitter. We saw an increase in reports of negative social media experiences but found no effects on well-being, news knowledge, outgroup empathy, perceptions of and support for partisan violence. This implies that bridging content can improve some societal outcomes without necessarily conflicting with the engagement-driven business model of social media.
More about Metagov Seminar: The Metagov Seminar invites individuals working in online governance to present their work to a community of other researchers and practitioners. Seminar topics include, but are not limited to, computational tools for governance, governance incidents and case studies from online communities, topics in cryptoeconomics, and the design of digital constitutions.
The seminar is intended for researchers and practitioners in online governance, broadly defined. We welcome guests and curious members of the public. Note that the discussion is moderated.