Eighty years ago this week, inventor Leonarde Keeler proudly proclaimed his expert testimony before a Wisconsin jury to be “a signal victory for those who believe in scientific crime detection.” One ...

“If you’re trying to find one leaker in an organization of 100 people, you could end up falsely accusing dozens of people,” according to Amit Katwala, author of the polygraph history Tremors in the ...

John Baesler, associate professor of history at Saginaw Valley State University, has written his first book, examining the topic of polygraph use during and after the Cold War. The book, "Clearer Than ...

Attorneys for Christine Blasey Ford, the woman who’s accused Supreme Court justice nominee Brett Kavanaugh of sexual assault, released the results of a polygraph test focused on the decades-old ...

Federal agencies have stepped up their efforts over the past few weeks to find potential leakers, and some — like the FBI, the Department of Homeland Security and the Department of Defense — are ...

A version of this story appeared in CNN’s What Matters newsletter. To get it in your inbox, sign up for free here. When President Ronald Reagan’s White House threatened thousands of government ...

In terms of catching spies, polygraph tests failed spectacularly in key moments. More on that in a moment. First, consider the second Trump administration, which is leaning in on polygraphs, ...