lie detector test
- A tool, also known as a polygraph, that measures physiological responses like changes in blood pressure and respiration during questioning to evaluate if a person is being truthful. Its accuracy remains disputed and its evidence is usually not allowed in most U.S. courts
- Having nothing to hide, he willingly agreed to take a lie detector test.
- The law enforcement agency used a lie detector test to verify the suspect's statements.
- The accuracy of the lie detector test was called into question during the trial.