Construct validity involves examining how well a test or scale reflects the theoretical concept it purports to measure. Evidence may include factor structure, correlations with related constructs and differences between known groups, showing that the scale taps the intended construct rather than something else.
Option A:
This option refers to face validity, which is based on superficial judgment by laypersons about whether items look appropriate; face validity alone is insufficient to establish construct validity.
Option B:
This option describes criterion-related validity, where test scores predict or correlate with an external criterion such as future performance. Predictive validity is one subtype of criterion validity.
Option C:
This option is correct because construct validity asks whether the pattern of items and scores truly reflects the intended theoretical construct, not just surface appearance or correlation with one external criterion.
Option D:
Consistency of scores over two administrations refers to reliability, particularly testβretest reliability. An instrument can be reliable yet still fail to capture the intended construct accurately.
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