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Psychological factor, barrier 7 of 8

Cognitive dissonance and motivated reasoning

Festinger (1957) described the discomfort people feel when their beliefs or actions conflict, which they often reduce by changing a belief or rejecting conflicting evidence. The theory's details are debated (rated C in the strength ratings).

Evidence

  • Replication. A preregistered replication in 39 labs with nearly 4,900 people found that writing an essay against one's own view shifted attitudes, but having a choice about writing it made no difference, contradicting the classic prediction (Vaidis et al., 2024).
  • Related prediction. The selective exposure meta-analysis under cognitive biases supports the related prediction that people avoid information that conflicts with their beliefs (Hart et al., 2009).
  • Replication authors' reply. The authors of the replication replied to commentaries that the wider dissonance literature shows pervasive weaknesses, such as underpowered studies (Sleegers et al., 2024).

What can be done

Actions rated on the strength-rating scale (A strong and replicated, B solid but limited, C weak or debated, D contested or failed), applied to the specific claim made.

  • Correct misinformation without fear of backfire (A). Across five experiments with more than 10,100 people on 52 issues, corrections did not backfire (Wood and Porter, 2019), and a review concluded backfire effects are not robust (Swire-Thompson, DeGutis, and Lazer, 2020). Corrections change factual beliefs more than attitudes.
  • Deep canvassing (B). Non-judgmental exchange of personal stories reduced exclusionary attitudes for at least four months (d = 0.04 to 0.08), while arguments alone had no effect (Kalla and Broockman, 2020).
  • Accuracy prompts on social media (B). Shifting attention to accuracy improved the quality of news people shared (Pennycook et al., 2021), and across 20 experiments prompts cut sharing of false headlines by 10% (Pennycook and Rand, 2022). An independent replication found a smaller effect (Roozenbeek, Freeman, and van der Linden, 2021).
  • Teach lateral reading, leaving a site to check who is behind it (B). Six lessons improved students' ability to judge online sources in one school district (Wineburg et al., 2022), and it is one of nine tools in an expert review of interventions against misinformation (Kozyreva et al., 2024). Effect sizes were not available.
  • Registered reports in science (B). Only 44% of registered reports had positive results, against 96% of standard papers, which suggests the format reduces publication of false positives (Scheel, Schijen, and Lakens, 2021).
  • Weak or not shown to work: Prebunking videos improved recognition of manipulation techniques in tests, partly run with a platform partner (C) (Roozenbeek et al., 2022), but gamified prebunking mostly made people more skeptical of all news, true and false (D) (Modirrousta-Galian and Higham, 2023, Graham et al., 2023, Seabrooke, Modirrousta-Galian, and Higham, 2025). Adversarial collaboration has no controlled outcome evidence, only participants' reports (C) (Isch, Tetlock, and Clark, 2025), and the findings of the main meta-analysis of devil's advocacy could not be confirmed (Schwenk, 1990).

Proposed and experimental methods

Methods that are proposed, under trial, approved in some places, or tried and then failed. Each shows a stage label and an evidence rating. A stage label shows how far a method has progressed, not whether it works. The stage labels are explained on the psychological factor page.

  • Crowd-sourced fact-check notes shown only when people who usually disagree rate them helpful (Large trial, B). This "bridging" system runs on X as Community Notes, and Meta said in January 2025 that it would replace U.S. third-party fact-checking with a similar system (Associated Press, 2025). Across 40,078 posts on X, notes cut reposts by 46.1% and views by 13.5% after being attached, but only by 11.6% and 5.5% over a post's whole life because notes arrive late (Slaughter et al., 2025). An independent study of 237,180 posts found a 61.2% drop in later spread and 94.3% higher odds that authors deleted the post, effects that were weaker for influential accounts and political content, and a 14.9% fall in total engagement (Chuai et al., 2026).
  • Reranking social media feeds to show less partisan hostility (Early trial, B). The bridging principle has been proposed for ranking whole feeds (Ovadya and Thorburn, 2023). In a preregistered 10-day experiment with 1,256 X users during the 2024 U.S. campaign, run without platform cooperation, using an AI model to show fewer or more posts with antidemocratic attitudes and partisan animosity shifted feelings toward the other party by more than 2 points on a 100-point scale (Piccardi et al., 2025). Switching Facebook and Instagram users to chronological feeds for 3 months did not change polarization (Guess et al., 2023), and a simulation on Facebook data found that simple bridging ranking can push down content on controversial topics (C) (Milli et al., 2024).
  • Short depolarization treatments tested in a megastudy (Large trial, B for short-term effects, C for lasting effects). A megastudy of 25 treatments with 32,059 Americans found that many reduced partisan animosity, most strongly by showing relatable people from the other side or shared identities, and several reduced support for undemocratic practices, most strongly by correcting misperceptions of rivals' views (Voelkel et al., 2024). A news summary reports that 23 of 25 reduced animosity, 6 reduced antidemocratic attitudes, 4 increased them, and effects had substantially faded two weeks later (Fried, 2026).
  • AI conversations to reduce false beliefs (Early trial, C). A person states a belief and an AI model argues against it with tailored evidence. Among 2,190 conspiracy believers, a dialogue with GPT-4 Turbo reduced belief by about 20%, the effect remained 2 months later, and belief in unrelated conspiracies also fell (Costello, Pennycook, and Rand, 2024), but in June 2026 the journal issued an expression of concern after the authors reported problems reproducing some values from the public data (the authors say their reanalysis matches the original findings) (Retraction Watch, 2026). A month-long preprint study with 67 people found AI help raised accuracy by 21% during assisted sessions while unassisted performance on new items fell 15.3% by week 4 (Rani et al., 2025). The same skill can be misused: in debates with 900 people, GPT-4 with access to personal data was more persuasive than humans 64.4% of the time when the two differed (Salvi et al., 2025).
  • Intellectual humility training (Early trial, C). It aims to make people aware of the limits of their knowledge and value others' views. In lab studies, inducing a belief that intelligence can grow increased intellectual humility, which in turn increased openness to opposing political views (Porter and Schumann, 2018). But in three main studies with 1,740 adolescents, including a randomized experiment, collaborative dialogue about ethics and politics did not increase intellectual humility on self-report, behavioral, or text measures (Prinzing and Vazquez, 2026).
  • Large adversarial collaborations (Early trial, C). This builds on the adversarial collaboration entry above (Isch, Tetlock, and Clark, 2025). In the largest example, proponents of two leading theories of consciousness preregistered rival predictions with a neutral team and tested them in 256 people with three brain imaging methods, and the results substantially challenged key tenets of both theories (Cogitate Consortium et al., 2025). There is no evidence yet on whether the losing sides change their views.

Sources cited on this page

  1. Festinger, L. (1957). A Theory of Cognitive Dissonance. Evanston, IL: Row, Peterson. C Limited: D for the effect of choice in induced compliance
  2. Hart, W., Albarracín, D., Eagly, A. H., Brechan, I., Lindberg, M. J., & Merrill, L. (2009). Feeling validated versus being correct: a meta-analysis of selective exposure to information. Psychological Bulletin, 135(4), 555-588. DOI B Moderate
  3. Vaidis, D. C., Sleegers, W. W. A., van Leeuwen, F., et al. (2024). A multilab replication of the induced-compliance paradigm of cognitive dissonance. Advances in Methods and Practices in Psychological Science, 7(1), 1-26. DOI A Strong
  4. Gal, D., & Rucker, D. D. (2018). The loss of loss aversion: Will it loom larger than its gain? Journal of Consumer Psychology, 28(3), 497-516. link C Limited
  5. Graham, M. E., Skov, B., Gilson, Z., Heise, C., Fallow, K. M., Mah, E. Y., et al. (2023). Mixed news about the Bad News Game. Journal of Cognition, 6(1), 58. link B Moderate
  6. Isch, C., Tetlock, P. E., & Clark, C. J. (2025). Reflections on adversarial collaboration from the adversaries: Was it worth it? Theory and Society, 54(6), 929-946. link C Limited
  7. Kalla, J. L., & Broockman, D. E. (2020). Reducing exclusionary attitudes through interpersonal conversation: Evidence from three field experiments. American Political Science Review, 114(2), 410-425. link B Moderate
  8. Kozyreva, A., Lorenz-Spreen, P., Herzog, S. M., Ecker, U. K. H., Lewandowsky, S., Hertwig, R., et al. (2024). Toolbox of individual-level interventions against online misinformation. Nature Human Behaviour, 8(6), 1044-1052. link B Moderate
  9. Li, Y., & Bates, T. C. (2019). You can't change your basic ability, but you work at things, and that's how we get hard things done: Testing the role of growth mindset on response to setbacks, educational attainment, and cognitive ability. Journal of Experimental Psychology: General, 148(9), 1640-1655. link B Moderate
  10. Modirrousta-Galian, A., & Higham, P. A. (2023). Gamified inoculation interventions do not improve discrimination between true and fake news: Reanalyzing existing research with receiver operating characteristic analysis. Journal of Experimental Psychology: General, 152(9), 2411-2437. link B Moderate
  11. Pennycook, G., Epstein, Z., Mosleh, M., Arechar, A. A., Eckles, D., & Rand, D. G. (2021). Shifting attention to accuracy can reduce misinformation online. Nature, 592(7855), 590-595. link B Moderate
  12. Pennycook, G., & Rand, D. G. (2022). Accuracy prompts are a replicable and generalizable approach for reducing the spread of misinformation. Nature Communications, 13(1), 2333. link B Moderate
  13. Roozenbeek, J., Freeman, A. L. J., & van der Linden, S. (2021). How accurate are accuracy-nudge interventions? A preregistered direct replication of Pennycook et al. (2020). Psychological Science, 32(7), 1169-1178. link B Moderate
  14. Roozenbeek, J., van der Linden, S., Goldberg, B., Rathje, S., & Lewandowsky, S. (2022). Psychological inoculation improves resilience against misinformation on social media. Science Advances, 8(34), eabo6254. link C Limited
  15. Scheel, A. M., Schijen, M. R. M. J., & Lakens, D. (2021). An excess of positive results: Comparing the standard psychology literature with Registered Reports. Advances in Methods and Practices in Psychological Science, 4(2). link B Moderate
  16. Schwenk, C. R. (1990). Effects of devil's advocacy and dialectical inquiry on decision making: A meta-analysis. Organizational Behavior and Human Decision Processes, 47(1), 161-176. link C Limited: (findings not confirmed)
  17. Seabrooke, T., Modirrousta-Galian, A., & Higham, P. A. (2025). Re-examining the bad news game: No evidence of improved discrimination of Indian true and fake news headlines. Psychonomic Bulletin & Review, 33(1), 13. link B Moderate
  18. Swire-Thompson, B., DeGutis, J., & Lazer, D. (2020). Searching for the backfire effect: Measurement and design considerations. Journal of Applied Research in Memory and Cognition, 9(3), 286-299. link B Moderate
  19. Wineburg, S., Breakstone, J., McGrew, S., Smith, M. D., & Ortega, T. (2022). Lateral reading on the open Internet: A district-wide field study in high school government classes. Journal of Educational Psychology, 114(5), 893-909. link B Moderate
  20. Wood, T., & Porter, E. (2019). The elusive backfire effect: Mass attitudes' steadfast factual adherence. Political Behavior, 41(1), 135-163. link A Strong
  21. Chuai, Y., Pilarski, M., Renault, T., Restrepo-Amariles, D., Troussel-Clément, A., Lenzini, G., et al. (2026). Community-based fact-checking reduces the spread of misleading posts on X (formerly Twitter). Nature Communications, 17, 4070. link B Moderate
  22. Cogitate Consortium, Ferrante, O., Gorska-Klimowska, U., Henin, S., Hirschhorn, R., Khalaf, A., et al. (2025). Adversarial testing of global neuronal workspace and integrated information theories of consciousness. Nature, 642(8066), 133-142. link B Moderate
  23. Costello, T. H., Pennycook, G., & Rand, D. G. (2024). Durably reducing conspiracy beliefs through dialogues with AI. Science, 385(6714), eadq1814. link C Limited
  24. Fried, C. (2026, July 15). Reducing partisan hostility can be surprisingly simple. UCLA Anderson Review. link B Moderate
  25. Guess, A. M., Malhotra, N., Pan, J., Barberá, P., Allcott, H., Brown, T., et al. (2023). How do social media feed algorithms affect attitudes and behavior in an election campaign? Science, 381(6656), 398-404. link B Moderate
  26. Milli, S., Thorburn, L., Bouchaud, P., Wang, Y., Garg, N., & Pierson, E. (2024). Bridging in social media feeds censors controversial topics [Workshop paper]. Pluralistic Alignment Workshop, NeurIPS 2024. link C Limited
  27. Ovadya, A., & Thorburn, L. (2023). Bridging systems: Open problems for countering destructive divisiveness across ranking, recommenders, and governance (arXiv:2301.09976). arXiv. link B Moderate
  28. Piccardi, T., Saveski, M., Jia, C., Hancock, J., Tsai, J. L., & Bernstein, M. S. (2025). Reranking partisan animosity in algorithmic social media feeds alters affective polarization. Science, 390(6776), eadu5584. link B Moderate
  29. Porter, T., & Schumann, K. (2018). Intellectual humility and openness to the opposing view. Self and Identity, 17(2), 139-162. link C Limited
  30. Prinzing, M., & Vazquez, M. (2026). Does collaborative dialogue increase intellectual humility about ethics and politics? American Psychologist. Advance online publication. link B Moderate
  31. Rani, A., Danry, V., Liang, P. P., Lippman, A. B., & Maes, P. (2025). Dialogues with AI reduce beliefs in misinformation but build no lasting discernment skills (arXiv:2510.01537). arXiv. link C Limited
  32. Salvi, F., Horta Ribeiro, M., Gallotti, R., & West, R. (2025). On the conversational persuasiveness of GPT-4. Nature Human Behaviour, 9(8), 1645-1653. link B Moderate
  33. Slaughter, I., Peytavin, A., Ugander, J., & Saveski, M. (2025). Community notes reduce engagement with and diffusion of false information online. Proceedings of the National Academy of Sciences, 122(38), e2503413122. link B Moderate
  34. Voelkel, J. G., Stagnaro, M. N., Chu, J. Y., Pink, S. L., Mernyk, J. S., Redekopp, C., et al. (2024). Megastudy testing 25 treatments to reduce antidemocratic attitudes and partisan animosity. Science, 386(6719), eadh4764. link B Moderate

Every source for this factor is listed on the psychological factor page.