Content validity is established by ensuring all relevant facets of the construct are included; how is it usually established?

• A. Expert review and alignment with standards
• B. Statistical factor analysis
• C. Random sampling of items
• D. Student surveys on interest

Answer: (A)

Content validity is about making sure the test actually covers all parts of the construct it’s meant to measure. The usual way to establish this is through expert review and alignment with standards or a defined blueprint. Subject‑matter experts evaluate each item for relevance, clarity, and representativeness of every facet of the construct, ensuring that all key components are included. They map items to a standards-based framework or blueprint so the test content reflects the intended domain and its breadth. Sometimes this review is formalized with a content validity index, where experts rate items and consensus is used to keep or revise them.

Statistical factor analysis, by contrast, looks at how items group together statistically to reveal underlying dimensions, not whether the items adequately cover all facets of the construct. Random sampling of items risks missing important areas, so it doesn’t guarantee comprehensive coverage. Student surveys on interest gauge engagement or appeal, not whether the content truly represents all facets of the construct being measured.