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Fake news and partisan bias
- 1. The partisan brain:An identity- based model of political belief @jayvanbavel
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- 5. Brady,Wills, Jost,Tucker &,VanBavel, 2017, PNAS Our Partisan Brains
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- 7. Sharing Fake news “Falsehooddiffused significantly farther, faster, deeper, and more broadly than the truth in all categories of information, and the effects were more pronounced for false political news than for false news about terrorism, natural disasters, science, urban legends, or financial information.” (Science, 2018)
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- 9. Van Bavel &Pereira, 2018,TiCS AccuracyIdentity Our Partisan Brains
- 10. Van Bavel &Pereira, 2018,TiCS Our Partisan Brains
- 11. Van Bavel &Pereira, 2018,TiCS Our Partisan Brains Political news
- 12. Fake news 1) Confirmationbias 2) Ideological values 3) Partisan Brains Three experiments (N = 1420) THREE HYPOTHESES Pereira, Harris &Van Bavel: https://psyarxiv.com/7vc5d/
- 13. Fake news Real FakeNews 1) Confirmation bias 2) Ideological values 3) Partisan Brains Three experiments (N = 1420) THREE HYPOTHESES Pereira, Harris &Van Bavel: https://psyarxiv.com/7vc5d/
- 14. Fake news Pereira, Harris&Van Bavel: https://psyarxiv.com/7vc5d/ Anti-Democrat Fake News
- 15. Fake news Pereira, Harris&Van Bavel: https://psyarxiv.com/7vc5d/ Anti-Republican Fake News
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- 19. Summary •Democrats & Republicansare both more likely to believe news when that belief fulfills identity goals: •Ingroup value-upholding behavior •Outgroup value-undermining behavior
- 20. Van Bavel &Pereira, 2018,TiCS Our Partisan Brains Non-political news
- 21. Van Bavel &Pereira, 2018,TiCS Our Partisan Brains Non-political news
- 22. Fake news belief Non-partisanfake news
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- 24. Summary •Democrats: Default is disbelief,unless they like the news •Republicans: Default is belief, unless they dislike the news
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- 28. Summary •Democrats & Republicansare both more likely to believe news when that belief fulfills identity goals: •Ingroup value-upholding behavior •Outgroup value-undermining behavior
- 29. Summary •Democrats & Republicansare both more likely to believe news when that belief fulfills identity goals: •Ingroup value-upholding behavior •Outgroup value-undermining behavior •Republicans are more likely to share news on social media when that fulfills identity goals
- 30. Summary •Democrats & Republicansare both more likely to believe news when that belief fulfills identity goals: •Ingroup value-upholding behavior •Outgroup value-undermining behavior •Republicans are more likely to share news on social media when that fulfills identity goals •Republicans are more likely to believe apolitical news
- 31. Can we factcheck?
- 32. Can we factcheck?
- 33. A failure toreplicate
- 34. Partisan Backfire Reinero, Harris,Duke &Van Bavel Replicate Backfire effect N = 385 (Prolific) Climate change, military, immigration, health care, planned parenthood Facts and factcheck from political leaders
- 35. Partisan Backfire Reinero, Harris,Duke &Van Bavel
- 36. Partisan Backfire Reinero, Harris,Duke &Van Bavel
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- 39. No overall backfire Veryfew backfires—most people simply don’t update Backfiring
- 40. No overall backfire Veryfew backfires—most people simply don’t update BackfiringUpdating
- 41. Fact checking (kinda)works Fact check effect: p = .015 (r = .05)
- 42. Partisanship dominates! Partisan biaseffect: p < .0000000000001 (r = .50)
- 43. Summary •Democrats & Republicansare both likely to weakly update their beliefs to a fact check •But Democrats & Republicans strongly base their beliefs on whatever their in-group leaders tell them •Party identity trumps reality— effect size of partisanship is 10X larger than fact checking effect
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