Content validity refers to the extent to which the items on a test are fairly representative of the entire domain the test seeks to measure. This entry discusses origins and definitions of content validation, methods of content validation, the role of [Page 239]content validity evidence in validity arguments, and unresolved issues in content validation.
One of the strengths of content validation is the simple and intuitive nature of its basic idea, which holds that what a test seeks to measure constitutes a content domain and the items on the test should sample from that domain in a way that makes the test items representative of the entire domain. Content validation methods seek to assess this quality of the items on a test. Nonetheless, the ...
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