A measure of consistency for tests and other instruments. Individuals are asked to take the test of interest and then take the same test again at a later date. The scores are then compared. The closer the scores are, the more reliable the test. Reliability is an important factor in testing because if paves the way for accuracy. Remember, reliability refers to a test producing consistent results, not necessarily valid results.
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Mohammed Looti, PSYCHOLOGICAL SCALES (2023) Test-Retest Reliability. Retrieved from https://scales.arabpsychology.com/terms/test-retest-reliability/. DOI: 10.13140/RG.2.2.31575.96163