POLYGRAPHS Meaning and
Definition
-
Polygraphs, also known as lie detectors, are devices used to measure and record various physiological responses of an individual when they are questioned or examined, in order to determine if they are telling the truth or being deceptive. The word "polygraph" originates from the Greek roots "poly" meaning "many" and "graph" meaning "writing," signifying the multiple physiological signals recorded during the test.
Polygraphs typically measure and analyze several physiological indicators, including changes in blood pressure, heart rate, respiration rate, and skin conductivity. These measurements are recorded on a chart or graph during the questioning period, allowing examiners to identify deviations or patterns that may indicate deception or stress. The assumption behind the polygraph is that deceptive answers will produce observable physiological responses, such as an increased heart rate or elevated blood pressure.
Though widely used in criminal investigations and pre-employment screenings, polygraphs remain controversial due to concerns regarding their accuracy and reliability. Critics argue that the results can be influenced by various factors such as stress, anxiety, or individual physiological differences. Additionally, there is an ongoing debate about the ability of polygraphs to consistently detect deception, as some individuals can manipulate their physiological responses or remain calm while lying.
Despite these criticisms, polygraphs continue to be employed as a tool for assessing truthfulness or deception in various fields, including law enforcement, government agencies, and intelligence services, while proponents argue that when combined with other investigative techniques, they can provide valuable insights in certain situations.
Common Misspellings for POLYGRAPHS
Etymology of POLYGRAPHS
The word "polygraph" has its roots in two Greek words: "poly" meaning "many" and "graphos" meaning "writer" or "to write". Hence, "polygraph" essentially means "many writers" or "many writings". This term reflects the primary purpose of the polygraph machine, which records multiple physiological responses simultaneously, such as blood pressure, pulse, respiration, and skin conductivity, in order to detect deception.
Similar spelling word for POLYGRAPHS
Infographic
Add the infographic to your website:
