Which type of validity determines whether test items adequately cover the domain of interest?

Which type of validity determines whether test items adequately cover the domain of interest?

• A. Content validity
• B. Criterion-related validity
• C. Construct validity
• D. Face validity

Answer: (A)

This is about whether the test items collectively sample the full content area they’re meant to assess. The goal is to ensure the items cover all the important parts of the domain and don’t miss key areas or overemphasize others. When the items map to a defined content domain and cover its breadth appropriately, the test demonstrates strong content validity. In practice, developers define a content blueprint or domain, link each item to parts of that domain, and often have experts review whether the items represent the intended content well. If the coverage matches the domain, it shows the test is sampling the right material, which is exactly what content validity measures. Other types focus on different questions: criterion-related validity looks at how test scores relate to external criteria, construct validity asks whether the test truly measures the theoretical construct of interest, and face validity is about whether the test appears appropriate to test-takers. Those do not directly answer whether the items adequately cover the domain of interest, which is why content validity is the correct concept here.

This is about whether the test items collectively sample the full content area they’re meant to assess. The goal is to ensure the items cover all the important parts of the domain and don’t miss key areas or overemphasize others. When the items map to a defined content domain and cover its breadth appropriately, the test demonstrates strong content validity.

In practice, developers define a content blueprint or domain, link each item to parts of that domain, and often have experts review whether the items represent the intended content well. If the coverage matches the domain, it shows the test is sampling the right material, which is exactly what content validity measures.

Other types focus on different questions: criterion-related validity looks at how test scores relate to external criteria, construct validity asks whether the test truly measures the theoretical construct of interest, and face validity is about whether the test appears appropriate to test-takers. Those do not directly answer whether the items adequately cover the domain of interest, which is why content validity is the correct concept here.