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ERIC Number: EJ1080077
Record Type: Journal
Publication Date: 2015-Nov
Pages: 27
Abstractor: As Provided
ISSN: ISSN-1944-7515
Testing Math or Testing Language? The Construct Validity of the KeyMath-Revised for Children with Intellectual Disability and Language Difficulties
Rhodes, Katherine T.; Branum-Martin, Lee; Morris, Robin D.; Romski, MaryAnn; Sevcik, Rose A.
American Journal on Intellectual and Developmental Disabilities, v120 n6 p542-568 Nov 2015
Although it is often assumed that mathematics ability alone predicts mathematics test performance, linguistic demands may also predict achievement. This study examined the role of language in mathematics assessment performance for children with intellectual disability (ID) at less severe levels, on the KeyMath-Revised Inventory (KM-R) with a sample of 264 children, in grades 2-5. Using confirmatory factor analysis, the hypothesis that the KM-R would demonstrate discriminant validity with measures of language abilities in a two-factor model was compared to two plausible alternative models. Results indicated that KM-R did not have discriminant validity with measures of children's language abilities and was a multidimensional test of both mathematics and language abilities for this population of test users. Implications are considered for test development, interpretation, and intervention.
American Association on Intellectual and Developmental Disabilities. P.O. Box 1897, Lawrence, KS 66044-1897. Tel: 785-843-1235; Fax: 785-843-1274; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: Elementary Education
Audience: N/A
Language: English
Sponsor: Institute of Education Sciences (ED)
Authoring Institution: N/A
IES Funded: Yes
Grant or Contract Numbers: H324K040007