Test-Retest Reliability. Test-retest reliability is a measure of the consistency of a psychological test or assessment. This kind of reliability is used to determine the consistency of a test across time. Test-retest reliability is best used for things that are stable over time, such as intelligence.
Argonaut - (Greek mythology) one of the heroes who sailed with Jason in search of the Golden Fleece. Greek mythology - the mythology of the ancient Greeks.
Achilles - a mythical Greek hero of the Iliad; a foremost Greek warrior at the siege of Troy; when he was a baby his mother tried to make him immortal by bathing him in a magical river but the heel by which she held him remained vulnerable--his `Achilles' heel'. Translations.