test-retest
UK: ˈtɛst riːˌtɛst | US: ˈtɛst riˌtɛst
n. a method of assessing the reliability of a test by administering it twice to the same subjects under similar conditions.
The term combines "test," from Old French test (small vessel, trial) and Latin testum (earthen pot, metaphorically extended to "trial"), with the prefix re- (again, back). The repetition (re-) of the same test (test) reflects the method's purpose: verifying consistency by repetition. The hyphenated form emphasizes the sequential nature of the process.
The psychologist used a test-retest design to ensure the questionnaire's reliability.
High correlation in test-retest results indicates stable measurement.
Participants completed the survey twice in a test-retest reliability study.
The tool's validity was confirmed through test-retest analysis.
Test-retest intervals should be short enough to avoid skill decay but long enough to prevent memorization.