What is content validity?

Content validity refers to the extent to which a measure accurately represents the specific domain or content it is supposed to assess. In other words, it assesses whether a test adequately covers the material it is designed to measure.

Content validity is typically established through a thorough review of the test items by experts in the subject matter. These experts evaluate whether the test items are representative of the content domain and whether they are relevant to the construct being measured.

If a test has high content validity, it means that it includes a comprehensive and representative sample of the content domain, and therefore accurately measures what it is supposed to measure. On the other hand, if a test has low content validity, it may not accurately assess the construct it is supposed to measure, leading to biased or inaccurate results.

Overall, content validity is an important aspect of test development and validation, as it ensures that the test measures what it is intended to measure in a reliable and valid manner.