The KeyMath-3 Diagnostic Assessment (KM-3) is an individually-administered math assessment used in educational placement and diagnostic decisions. It includes 10 subtests making up Basic Concepts, Operations, and Applications indexes and a "Total Test" composite that measures overall math ability. Here, covariances among subtests from…

Investigated the concurrent validity of the Peabody Individual Achievement Test and the KeyMath Diagnostic Arithmetic Test in 171 adolescents. The presence of relatively high and positive partial correlations between the scores supported the concurrent validity of the instruments. (JAC)

A study of 331 elementary school children tested the reliability of a computer resident interactive arithmetic test and found high levels of reliability, using single sitting and parallel forms methods. The study also tried to determine the validity of the interactive test by comparing it with arithmetic subtests of the Key Math Test (KMT). (PEN)

The effect on children's test scores of different item formats used in standardized mathematics achievement tests was investigated. In a Utah school, 40 second grade students completed a mathematics computation test using eight different formats derived from five standardized achievement tests. Identical content, taken from the most frequently…

The KeyMath Revised is a power test that measures the understanding and application of mathematics skills and concepts. It is individually administered and is intended for students from kindergarten through the ninth grade to determine student mastery of mathematics concepts. The revised version is designed to be user-friendly for the student and…