The role of the Big Geographic Sort in the circulation of misinformation among U.S. Reddit users
Lia Bozarth, Daniele Quercia, Licia Capra, Sanja Scepanovic

TL;DR
This study analyzes how the geographical self-segregation of Americans influences the online spread of misinformation on Reddit, revealing that local personality and cultural factors, rather than socioeconomic or political factors, drive misinformation circulation.
Contribution
It introduces the concept that offline geographic sorting significantly impacts online misinformation spread, emphasizing local personality and cultural influences over platform network effects.
Findings
Reddit's misinformation circulation scales linearly with state population.
Deviations from the pattern are explained by personality and cultural factors.
States with less diligent and looser cultures have higher misinformation circulation.
Abstract
Past research has attributed the online circulation of misinformation to two main factors - individual characteristics (e.g., a person's information literacy) and social media effects (e.g., algorithm-mediated information diffusion) - and has overlooked a third one: the critical mass created by the offline self-segregation of Americans into like-minded geographical regions such as states (a phenomenon called "The Big Sort"). We hypothesized that this latter factor matters for the online spreading of misinformation not least because online interactions, despite having the potential of being global, end up being localized: interaction probability is known to rapidly decay with distance. Upon analysis of more than 8M Reddit comments containing news links spanning four years, from January 2016 to December 2019, we found that Reddit did not work as an "hype machine" for misinformation (as…
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Taxonomy
TopicsMisinformation and Its Impacts · Social Media and Politics · Opinion Dynamics and Social Influence
