Test-retest reliability concerns which of the following?

• A. A test given to the same individual on different occasions results in similar results.
• B. Different raters producing similar scores.
• C. Scores aligning with a criterion measure.
• D. Scores showing a strong correlation with unrelated constructs.

Answer: (A)

Test-retest reliability asks whether a test provides consistent results when the same person takes it on different occasions. This measures the stability of scores over time, assuming the trait being measured remains the same between administrations. When scores stay similar across occasions, the test is demonstrating good temporal stability. The other ideas reflect different concepts: consistency across different raters (inter-rater reliability) or agreement with a criterion measure (criterion-related validity). A strong relationship with unrelated constructs would point to a validity issue rather than the stability of the score over time. So the statement about giving the same test to the same person on separate occasions and obtaining similar results best captures test-retest reliability.