When calculating composite scores based on less than the total number of subtests typically used for that composite, how does one find the SEm for the composite?
On page 16, the manual states, “Some users may only be interested in specific subtests; others may only be interested in specific composites.” (In the later case, it is necessary to give all of the subtests used in the formation of a specific composite.) We do not sugest that you arbitarily form your own composite by selecting subtests to give. If you are interested in specific subtests, you can administer the specific subtests and use the standard scores associated with them. We do not recomment prorating or using composites not standardized. DO NOT combine subtests unless we state in the manual that you should. Page 21 of the manual states, “In cases where fewer than the recommended number of subtests are administered, a composite score can still be computed.” While we do not allow for the prorating of scores, we do allow you to compute a quotient without giving all the subtests in the composite. We recognize that in some unique instances (such as the case where multiplication and di
Related Questions
- When I add up the scores for the three subtests and average them, it does not equal the Total Reading score. How are the scores on the SDRT calculated?
- Can I give all the core and supplemental subtests and choose to use the highest subtest scaled scores when computing composite scores?
- How can standard scores be generated for raw scores of 0 on the WIAT-IIUK subtests? How does this affect the Composite score?
