Sander van der Linden studies the psychology of misinformation. He and his lab have conducted studies to understand why people believe false information, and they've also leveraged the psychology of "inoculation" to build tools that help people avoid falling prey to misinformation. He describes this work and more in his new book, Foolproof: Why Misinformation Infects Our Minds and How to Build Immunity.You can play the video game that Sander's lab built to inoculate people against misinformation. The game is called Bad News.At the beginning of the episode, I share the story of the first bit of fake news in American media. In tracing the arc of the story and getting the critical details, I turned primarily to Andie Tucher's recent book, Not Exactly Lying: Fake News and Fake Journalism in American History. Other details thanks to an interview Tucher did, a story in The Saturday Evening Post, and an article by Emmanuel Paraschos.For a transcript of this episode, visit this episode's page at: http://opinionsciencepodcast.com/episodes/Learn more about Opinion Science at http://opinionsciencepodcast.com/ and follow @OpinionSciPod on Twitter.