If a test has good test-retest reliability:
If a test has good test-retest reliability:
Options:
(a) There is a strong correlation between items on the test
(b) It accurately measures what it says it measures
(c) It can be used to predict future performance
(d) The test yields similar scores if taken at two different times
✅ Correct Option: (d) The test yields similar scores if taken at two different times
Explanation:
Test-retest reliability refers to the consistency of test scores over time. A test with high reliability will produce similar results if the same individuals take it under similar conditions on separate occasions. It is essential for ensuring the accuracy and stability of assessments in educational and psychological measurement. High test-retest reliability indicates that the test is dependable, free from random errors, and suitable for longitudinal studies. PPSC frequently asks such questions in educational measurement and evaluation sections, testing understanding of reliability, validity, and standardization.
10 Related PPSC Facts:
Test-retest = temporal consistency High reliability = stable results Measures accuracy of scores Used in longitudinal research Ensures dependability of assessment Minimizes random errors Not same as validity Crucial in educational testing Applied in psychological assessments Often tested in PPSC pedagogy