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Cognitive development and down syndrome: Age-related change on the Stanford-Binet test (fourth edition)
Couzens, Donna Cuskelly, Monica Haynes, Michele
Couzens, Donna
Cuskelly, Monica
Haynes, Michele
Abstract
Growth models for subtests of the Stanford-Binet Intelligence Scale, 4th edition (R. L. Thorndike, E. P. Hagen, & J. M. Sattler, 1986a, 1986b) were developed for individuals with Down syndrome. Models were based on the assessments of 208 individuals who participated in longitudinal and cross-sectional research between 1987 and 2004. Variation in performance among individuals was large and significant across all subtests except Memory for Sentences. Scores on the Memory for Sentences subtest remained low between ages 4 to 30 years. Greatest variation was found on the Pattern Analysis subtest, where scores continued to rise into adulthood. Turning points for scores on the Vocabulary and Comprehension subtests appeared premature relative to normative patterns of development. The authors discuss development at the subdomain level and analyze both individual and group trajectories.
Keywords
Date
2011
Type
Journal article
Journal
American Journal on Intellectual and Developmental Disabilities
Book
Volume
116
Issue
3
Page Range
181-204
Article Number
ACU Department
Institute for Learning Sciences and Teacher Education (ILSTE)
Faculty of Education and Arts
Faculty of Education and Arts
Relation URI
Source URL
Event URL
Open Access Status
License
File Access
Controlled