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 …

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 …

With its graph- root, polygraph indicates that it writes out several different results. A polygraph's output consists of a set of squiggly lines on a computer screen, each indicating one function being tested.

The polygraph, invented in 1921, is today's most widely trusted lie-detection device.

POLYGRAPH definition: an instrument for receiving and recording simultaneously tracings of variations in certain body activities. See examples of polygraph used in a sentence.

Jan 22, 2025 · A polygraph, commonly known as a lie detector, is a device that measures and records several physiological indicators such as blood pressure, pulse, respiration, and skin conductivity …

Factsheet What does the noun polygraph mean? There are six meanings listed in OED's entry for the noun polygraph, two of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and …

Definition of polygraph noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

A polygraph test works by measuring someone’s physiological responses, which are believed to change when a person is lying. The polygraph, often referred to as a lie detector, is an instrument that …

What is a polygraph? A polygraph, most commonly referred to as a lie detector, is a machine that is used by law enforcement to test the physiological responses of individuals to certain questions.