TITLE

Predicting Longitudinal Change in Language Production and Comprehension in Individuals With Down Syndrome: Hierarchical Linear Modeling

AUTHOR(S)
Chapman, Robin S.; Hesketh, Linda J.; Kistler, Doris J.
PUB. DATE
October 2002
SOURCE
Journal of Speech, Language & Hearing Research;Oct2002, Vol. 45 Issue 5, p902
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Longitudinal change in syntax comprehension and production skill, measured four times across a 6-year period, was modeled in 31 individuals with Down syndrome who were between the ages of 5 and 20 years at the start of the study. Hierarchical Linear Modeling was used to fit individual linear growth curves to the measures of syntax comprehension (TACL-R) and mean length of spontaneous utterances obtained in 12-min narrative tasks (MLU-S), yielding two parameters for each participant's comprehension and production: performance at study start and growth trajectory. Predictor variables were obtained by fitting linear growth curves to each individual's concurrent measures of nonverbal visual cognition (Pattern Analysis subtest of the Stanford-Binet), visual short-term memory (Bead Memory subtest), and auditory short-term memory (digit span), yielding two individual predictor parameters for each measure: performance at study start and growth trajectory. Chronological age at study start (grand-mean centered), sex, and hearing status were also taken as predictors. The best-fitting HLM model of the comprehension parameters uses age at study start, visual short-term memory, and auditory short-term memory as predictors of initial status and age at study start as a predictor of growth trajectory. The model accounted for 90% of the variance in intercept parameters, 79% of the variance in slope parameters, and 24% of the variance at level 1. The same predictors were significant predictors of initial status in the best model for production, with no measures predicting slope. The model accounted for 81% of the intercept variance and 43% of the level 1 variance. When comprehension parameters are added to the predictor set, the best model, accounting for 94% of the intercept and 22% of the slope variance, uses only comprehension at study start as a predictor of initial status and comprehension slope as a predictor of production slope. These results reflect the fact that expressive l
ACCESSION #
7507145

 

Related Articles

  • Sampling Context Affects MLU in the Language of Adolescents With Down Syndrome. Miles, Sally; Chapman, Robin; Sindberg, Heidi // Journal of Speech, Language & Hearing Research;Apr2006, Vol. 49 Issue 2, p325 

    Purpose: The authors describe the procedures used to explain an unexpected finding that adolescents with Down syndrome (DS) had a lower mean length of utterance (MLU) than typically developing (TD) children in interviews without picture support, but not in narratives supported by wordless...

  • Use of Speaker Intent and Grammatical Cues in Fast-Mapping by Adolescents With Down Syndrome. McDuffie, Andrea S.; Sindberg, Heidi A.; Hesketh, Linda J.; Chapman, Robin S. // Journal of Speech, Language & Hearing Research;Dec2007, Vol. 50 Issue 6, p1546 

    Purpose: The authors asked whether adolescents with Down syndrome (DS) could fast-map novel nouns and verbs when word learning depended on using the speaker's pragmatic or syntactic cues. Compared with typically developing (TD) comparison children, the authors predicted that syntactic cues would...

  • Syntactic Complexity During Conversation of Boys With Fragile X Syndrome and Down Syndrome. Price, Johanna R.; Roberts, Joanne E.; Hennon, Elizabeth A.; Berni, Mary C.; Anderson, Kathleen L.; Sideris, John // Journal of Speech, Language & Hearing Research;Feb2008, Vol. 51 Issue 1, p3 

    Purpose: This study compared the syntax of boys who have fragile X syndrome (FXS) with and without autism spectrum disorder (ASD) with that of (a) boys who have Down syndrome (DS) and (b) typically developing (TD) boys. Method: Thirty-five boys with FXS only, 36 boys with FXS with ASD, 31 boys...

  • Influence of auditory stimulation on the development of syntactical and temporal features in European starling song Todt, Dietmar; Bohner, Jorg // Auk (American Ornithologists Union);Apr96, Vol. 113 Issue 2, p450 

    No abstract available.

  • Tutorial: An introduction to syntax. Shapiro, Lewis P. // Journal of Speech, Language & Hearing Research;Apr1997, Vol. 40 Issue 2, p254 

    Presents an introductory paper to syntax. Linguistics; Lexical and functional categories; Phrase structures; Structural relations; Thematic and semantic roles; Empty category principle; Summary of work in normal and disordered language; Garden path theory of sentence processing.

  • Please don't drop an item so quickly: A comment on Cheng and Hamid's syntax incompatibility error. Shek, Daniel T.L. // Perceptual & Motor Skills;Dec95 Part 1, Vol. 81 Issue 3, p977 

    Comments on S.T. Cheng and P.N. Hamid's syntax incompatibility error. Alternative explanations to explain the 1995 findings of Cheng and Hamid; Data which do not support the syntax incompatibility error.

  • Twisted syntax. Hart, Jack // Editor & Publisher;8/14/93, Vol. 126 Issue 33, p5 

    Discusses journalists' practice of twisting the syntax of sentences in writing. Examples; Violation of basic rules of English sentence syntax; Practice of cramming excessive information; Simplicity as surest way to clarity.

  • A Logico-mathematic, Structural Methodology: Part I, The Analysis and Validation of Sub-literal (Sub Lit) Language and Cognition. Haskell, Robert E. // Journal of Mind & Behavior;Summer/Autumn2003, Vol. 24 Issue 3/4, p347 

    In this first of three papers, a novel cognitive and psycho-linguistic non metric or non quantitative methodology developed for the analysis and validation of unconscious cognition and meaning in ostensibly literal verbal narratives is presented. Unconscious referents are reconceptualized as...

  • NON-TYPICAL RACKS.  // Outdoor Life;May2012, Vol. 219 Issue 5, p36 

    The article focuses on a report from the Boone and Crockett Club, which states that non-typical whitetail entries in phraseology tripled from 1992 to 2011.

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics