Though polygraph has been the mainstay for government and police departments since World War II, it has undergone substantial transformation in recent years. Fu

A polygraph test provides useful information in many scenarios and can be a crucial component of a criminal investigation, even a required step for security scr

The polygraph, often portrayed as a magic mind-reading machine, is still controversial among experts, who continue heated debates about its validity as a lie-de

Throughout history, there has been an intrinsic need for humans to detect deception in other humans. Developed in 1923, the polygraph machine was a tool designe

John F. Sullivan was a polygraph examiner with the CIA for thirty-one years, during which time he conducted more tests than anyone in the history of the CIA's p