Polygraph - Wikipedia
The Preliminary Credibility Assessment Screening System, or PCASS, captures less physiological information than a polygraph, and uses an algorithm, not the judgment of a polygraph examiner, to …
Fox News host wants Savannah Guthrie ‘to do a polygraph’
Feb 12, 2026 · Fox News host Greg Gutfeld has said NBC host Savannah Guthrie should offer to do a polygraph test in the investigation into her mother's disappearance. Nancy Guthrie was reported …
Do “lie detectors” work? What psychological science says ...
Aug 5, 2004 · During a polygraph test, an interviewer or interrogator asks the subject a series of questions designed to elicit truthful answers and lies, then measures physiological changes in …
Savannah Guthrie's Mom: Polygraph Report Remains Unconfirmed ...
1 day ago · The Pima County Sheriff's Department refused to comment on a report that polygraph tests were being conducted.
Home - American Polygraph Association
The American Polygraph Association, established in 1966, is the largest polygraph association consisting of examiners in the private, law enforcement, and government fields.
Understanding Polygraph Testing: How Lie Detectors Work
Mar 26, 2025 · The polygraph is a tool commonly used in law enforcement to test whether defendants, witnesses, and other individuals who are party to a criminal case are being truthful or deceptive. It’s …
How Do Polygraphs Work? - Psychology Today
Jun 29, 2022 · When people lie, their bodies tend to react in detectable ways. Polygraphs measure physiological changes in the cardiovascular system, breathing, and sweating. By comparing the …