In 1957, Leon Festinger published A Theory of Cognitive Dissonance. Along with a collection of compelling experiments, Festinger changed the landscape of social psychology. The theory, now referenced constantly both in and outside of academic circles, has taken on a life of its own. And it’s still informing new research and analysis more than 60 years later.For the grand 20th episode of Opinion Science, I want to give you an insider’s look at the theory–its inspiration, the people involved, the classic studies, and the remaining controversies.Throughout the show you’ll hear from people who have studied cognitive dissonance and who knew the infamous Leon Festinger: Elliot Aronson, Joel Cooper, Jeff Stone, April McGrath, and Mike Gazzaniga.To learn more about cognitive dissonance, check out these two books written by two of our guests: Cognitive Dissonance: 50 Years of Classic Theory and Mistakes Were Made (but Not by Me).For a transcript of this show, visit the episode's webpage: http://opinionsciencepodcast.com/episode/cognitive-dissonance/Learn more about Opinion Science at http://opinionsciencepodcast.com/ and follow @OpinionSciPod on Twitter.