Episode Details

Why do false beliefs spread so easily? In this episode, we discover the psychological defense against propaganda: inoculation theory. William McGuire's 1961 research reveals that exposure to weak versions of false claims actually strengthens your resistance to persuasion—like a vaccine for your brain. We explore the real history behind the 'brainwashing' panic and learn how prebunking can protect you from misinformation before you ever encounter it. 00:00:00 - The Illusory Truth Effect: Why Repetition Makes Us Believe 01:30:00 - The Brainwashing Panic: Korean War Defections and Manufactured Myths 05:00:00 - William McGuire's Question: Why Were Soldiers Vulnerable? 08:00:00 - Inoculation Theory: Vaccinating Against Propaganda 15:00:00 - Prebunking in Practice: Building Your Cognitive Immune System --- Sources & further reading: • William McGuire & Dimitrios Papageorgis — "The Relative Efficacy of Various Types of Prior Belief-Defense in Producing Immunity Against Persuasion" (1961) — Journal of Abnormal and Social Psychology • Sander van der Linden — Foolproof: Why We Fall for Misinformation and How to Build Immunity (2023): https://www.sandervanderlinden.com/ • Jon Roozenbeek, Cecilie Traberg, Sander van der Linden et al. — "Psychological booster shots targeting memory increase long-term resistance against misinformation" (2025): https://www.nature.com/articles/s41467-025-57205-x • Jon Roozenbeek & Sander van der Linden — "Fake news game confers psychological resistance against online misinformation" (2019) — Palgrave Communications • Cambridge Social Decision-Making Lab — Bad News Game overview: https://www.sdmlab.psychol.cam.ac.uk/research/bad-news-game • University of Cambridge — "Fake news 'vaccine' works" press release: https://www.cam.ac.uk/research/news/fake-news-vaccine-works-pre-bunk-game-reduces-susceptibility-to-disinformation • University of Cambridge — "How to 'inoculate' millions against misinformation on social media": https://www.cam.ac.uk/stories/inoculateexperiment • Tay, Hurlstone, Kurz & Ecker — "A comparison of prebunking and debunking interventions for implied versus explicit misinformation" (2022) — British Journal of Psychology: https://bpspsychub.onlinelibrary.wiley.com/doi/10.1111/bjop.12551 • Lorko, Čavojová, Šrol et al. — "Timing Matters: The Effects of Prebunking Versus Debunking on Trust in Disinformation" (2026) — Personality and Social Psychology Bulletin: https://journals.sagepub.com/doi/10.1177/01461672251411571 • Biddlestone et al. — "Tune in to the prebunking network! Development and validation of six inoculation videos" (2025) — Political Psychology: https://onlinelibrary.wiley.com/doi/full/10.1111/pops.70015 • Traberg, Roozenbeek & van der Linden — "Psychological Inoculation against Misinformation: Current Evidence and Future Directions" (2022) — The Annals of the American Academy of Political and Social Science: https://journals.sagepub.com/doi/full/10.1177/00027162221087936 • Euronews — "Finland's war on fake news starts in schools" (2025): https://www.euronews.com/next/2025/08/19/finlands-war-on-fake-news-starts-in-schools-ai-could-make-that-a-lot-harder • Fortune — "Finland teaches 6-year-olds to spot disinformation" (2025): https://www.fortune.com/2025/01/29/finland-teaches-6-year-olds-to-spot-disinformationand-internet-hoaxes-media-literacy • Psychology Today — "How Finland Fights Disinformation" (2022): https://www.psychologytoday.com/gb/blog/misinformation-desk/202205/how-finland-fights-disinformation • Jigsaw (Google) — "Defanging Disinformation's Threat to Ukrainian Refugees": https://medium.com/jigsaw/defanging-disinformations-threat-to-ukrainian-refugees-b164dbbc1c60 • …and 3 more in the episode research notes This podcast episode was fully generated by AI — research, script, voices, and production. Built with Claude, Piper TTS, and automated pipeline tooling.