Cognitive psychologist Briony Swire-Thompson on the science of lies, misinformation and fact-checking

What is the allure of misinformation? What are the reasons why people believe lies, and what does it take to change their minds? Brian Stelter speaks with Briony Swire-Thompson, cognitive psychologist and senior research scientist at Northeastern University's Network Science Institute, for answers. Swire-Thompson shares what her research has shown about lies, trust, and belief, and how Trumpism has changed the field of study. When it comes to conspiracy theories, Swire-Thompson says election denialism "has all the makings of a long-lasting conspiracy theory." To learn more about how CNN protects listener privacy, visit cnn.com/privacy