Which statement best describes construct validity?

• A. The consistency of a measure over time
• B. The extent to which a measure represents all facets of a given concept
• C. The measure's ability to predict outcomes
• D. The degree to which a test measures the theoretical construct it is intended to measure

Answer: (D)

Construct validity evaluates whether a test truly measures the theoretical construct it is meant to capture. It hinges on the alignment between what the items assess and the underlying concept, supported by evidence about how the test relates to other measures that should be related or unrelated, as well as its internal structure. The statement that best describes this idea is that the test measures the theoretical construct it is intended to measure. The other descriptions refer to different psychometric properties: consistency of scores over time reflects reliability, representing all facets of the concept corresponds to content validity, and the ability to predict outcomes relates to predictive or criterion validity.