Me, My Echo Chamber, and I: Introspection on Social Media Polarization

摘要: Homophily --- our tendency to surround ourselves with others who share perspectives and opinions about the world is both a part of human nature an organizing principle underpinning many digital social networks. However, when it comes politics or culture, homophily can amplify tribal mindsets produce "echo chambers" that degrade quality, safety, diversity discourse online. While several studies have empirically proven this point, few explored how making users aware extent their political echo chambers influences subsequent beliefs actions. In paper, we introduce Social Mirror, network visualization tool enables sample Twitter explore politically-active parts network. We use Mirror recruit prior history randomized experiment where evaluate effects different treatments on participants' i) connections, ii) they choose follow, iii) alignment URLs share. see no average shared URLs, find recommending accounts opposite ideology follow reduces in homogeneity connections but still enhances connection one week after treatment. Conversely, participants enhance belief less diverse 2-3 weeks implications these disconnects between actions future efforts promote healthier exchanges public spheres.