The question of whether a measure devised for a concept truly reflects the…

Concept

Validity is the degree to which evidence supports interpreting a measure as representing the intended construct. Different forms of validity ask whether a measure captures the construct, whether a causal inference is sound, whether findings generalise, or whether a task reflects real-life conditions.

Application

The stem asks whether an operational measure actually represents the concept it was designed to denote. This is the measure-to-construct question, so it concerns measurement validity.

Contrast

• Measurement validity concerns whether an operational measure represents the intended theoretical concept.

• Ecological validity concerns how well a study setting or task resembles real-life conditions.

• Internal validity concerns whether the observed effect can be attributed to the studied cause rather than confounding factors.

• External validity concerns whether findings generalise to other populations, settings, or times.

Result

Therefore, the best-supported answer is Measurement validity.