Among the colorful, eccentric and often highly unethical characters who populate the history of the polygraph was the virtuous John Larson, who in 1920 was the only cop in America with a doctorate, ...

“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 ...

For as long as human beings have deceived one another, people have tried to develop techniques for detecting deception and finding truth. Lie detection took on aspects of modern science with the ...

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 ...

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 ...

Getting your Trinity Audio player ready... Colorado has spent more than $5 million to administer polygraphs on convicted sex offenders over the last seven years despite concerns that the tests are so ...

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 ...