Content validity is concerned with what aspect of a test?

Content validity refers specifically to the extent to which a test accurately represents the content it aims to measure. This means that if a test claims to assess a particular skill, knowledge area, or subject matter, content validity evaluates whether the items on the test adequately cover that domain. For example, if a mathematics test includes questions solely on geometry when it is supposed to assess overall mathematical ability, it lacks content validity as it doesn't comprehensively address the curriculum it intends to measure.

The focus on measuring what a test claims to measure is vital for ensuring that the test scores are meaningful and reflective of a student's true abilities in the specified area. Therefore, a test with high content validity provides confidence that results can be reliably interpreted in relation to the content domain. This foundational concept is crucial in educational and psychological testing, impacting the interpretation of scores and making informed decisions based on the results.