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- Title
Limitations of Age-Equivalent Scores in Reporting the Results of Norm-Referenced Tests.
- Authors
Maloney, Emily S.; Larrivee, Linda S.
- Abstract
The literature for speech-language pathology is replete with criticisms of age-equivalent (AE) scores as descriptions of performance on standardized tests. However, there are few empirical examples that demonstrate explicitly the confusion that results from AE scores. This study investigated scores for 19-year-old participants on the Peabody Picture Vocabulary Test-III (PPVT-III; L. M. Dunn & L. M. Dunn, 1997) and examined the relationship between the participants' standard scores and their AE scores. Although the range of normal for standard scores was 88-115, derived AE scores for these participants ranged from 14;0 (years; months) to 22+. Results revealed that, as expected, standard scores were normally distributed. AE scores were unevenly distributed and skewed, making interpretation problematic. This information can be used to assist speech-language pathologists in implementing evidence-based practice when reporting performance on standardized tests.
- Subjects
SPEECH education; COMMUNICATIONS research; SPEECH disorders; SPEECH therapy; INTELLIGENCE tests; LANGUAGE ability testing
- Publication
Contemporary Issues in Communication Science & Disorders, 2007, Vol 34, p86
- ISSN
1092-5171
- Publication type
Article
- DOI
10.1044/cicsd_34_f_86