If a test is "valid," one criterion could be that test
scores must discriminate across groups that are theoretically
known to differ. A procedure is outlined to
assess the discrimination across groups that uses only
information from means. The method can be applied
to many published tests, it provides information that
relates to the construct validity of the test, and it presents
a way to identify how a new sample can be related
to previous studies.
Hattie, John & Cooksey, Ray W. (1984). Procedures for assessing the validities of tests using the "known-groups" method. Applied Psychological Measurement, 8, 295-305. doi:10.1177/014662168400800306
Hattie, John; Cooksey, Ray W..
Procedures for assessing the validities of tests using the "known-groups" method.
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