Examining the Language Performances of Children with and without Specific Language Impairment: Contributions of Phonological Short-Term Memory and Speed of Processing

Autor/inn/en	Montgomery, James W.; Windsor, Jennifer
Titel	Examining the Language Performances of Children with and without Specific Language Impairment: Contributions of Phonological Short-Term Memory and Speed of Processing
Quelle	In: Journal of Speech, Language, and Hearing Research, 50 (2007) 3, S.778-797 (20 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
DOI	10.1044/1092-4388(2007/054)
Schlagwörter	Age Differences; Word Recognition; Short Term Memory; Reaction Time; Language Impairments; Children; Phonology; Auditory Perception; Language Tests; Language Skills; Language Processing + Suchen Sie Ihr Suchwort? Age; Difference; Age difference; Altersunterschied; Worterkennung; Kurzzeitgedächtnis; Reaktionsvermögen; Speech disorder; Speech disorders; Speech disabilities; Speech disability; Speech handicap; Speech handicaps; Speech impairment; Speech impairments; Language handicaps; Sprachbehinderung; Child; Kind; Kinder; Fonologie; Auditive Wahrnehmung; Akustische Wahrnehmung; Akustik; Language test; Sprachtest; Language skill; Sprachkompetenz; Sprachverarbeitung
Abstract	Purpose: This study investigated the effects of processing speed and phonological short-term memory (PSTM) on children's language performance. Method: Forty-eight school-age children with specific language impairment (SLI) and age peers completed auditory detection reaction time (RT) and nonword repetition tasks, the Clinical Evaluation of Language Fundamentals-Revised (CELF-R; E. Semel, E. Wiig, & W. Secord, 1987), and a word recognition RT task. Correlation and regression were used to determine unique and shared contributions to variance among measures. Results: Children with SLI were outperformed by age peers on each task. Auditory detection RT was correlated with nonword repetition (NWR) in each group. However, both variables covaried with age, and auditory detection RT did not contribute unique variance to NWR in either group. For the SLI group, NWR predicted unique variance in CELF-R performance (about 15%); auditory detection RT predicted a smaller amount of unique variance in the word recognition RT task (about 9%). Conclusion: Processing speed and PSTM measures covaried with chronological age. Processing speed was associated with offline language performance only through association with PSTM. Processing speed contributed to online language performance, suggesting that speed is associated with processing more familiar language material (i.e., lexical content and structure) than less familiar material (e.g., various content on the CELF-R). (Author).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10