content validity

Content validity refers to how well a test or measurement tool covers all the important aspects of the concept it aims to assess. For example, if a math test is meant to measure overall math skills, content validity ensures the questions represent different areas like algebra, geometry, and arithmetic, rather than just one. It’s about making sure the test accurately reflects the full scope of the subject, so the results are meaningful and trustworthy. Essentially, it checks whether the test's content is appropriate and comprehensive for what it's supposed to measure.