Which of the following best describes the concept of content validity?

Content validity refers to the extent to which a test measures the entirety of the concept it aims to evaluate. It is concerned with whether the test items represent a comprehensive sample of the domain being assessed. For instance, in a test designed to measure mathematical abilities, content validity would require that the test includes various types of math problems that reflect the range of skills necessary for that domain, such as arithmetic, algebra, and geometry, rather than being narrowly focused on just one area.

The concept of content validity ensures that all relevant aspects of the construct are adequately represented, making the assessment more meaningful and relevant for its intended purpose. Therefore, when a test covers a representative sample of the behavior or knowledge it seeks to measure, it demonstrates high content validity. This is crucial for ensuring the test provides valuable insights into the abilities or knowledge levels of individuals.