Subtyping Children with Speech Sound Disorders by Endophenotypes

Autor/inn/en	Lewis, Barbara A.; Avrich, Allison A.; Freebairn, Lisa A.; Taylor, H. Gerry; Iyengar, Sudha K.; Stein, Catherine M.
Titel	Subtyping Children with Speech Sound Disorders by Endophenotypes
Quelle	In: Topics in Language Disorders, 31 (2011) 2, S.112-127 (16 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0271-8294
DOI	10.1097/TLD.0b013e318217b5dd
Schlagwörter	Reading Difficulties; Siblings; Language Impairments; Phonological Awareness; Children; Memory; Severity (of Disability); Psychomotor Skills; Speech Communication; Evaluation Methods; Age Differences; Classification; Early Childhood Education + Suchen Sie Ihr Suchwort? Reading difficulty; Leseschwierigkeit; Sibling; Geschwister; Speech disorder; Speech disorders; Speech disabilities; Speech disability; Speech handicap; Speech handicaps; Speech impairment; Speech impairments; Language handicaps; Sprachbehinderung; Child; Kind; Kinder; Gedächtnis; Schweregrad; Psychomotorische Aktivität; Age; Difference; Age difference; Altersunterschied; Classification system; Klassifikation; Klassifikationssystem; Early childhood; Education; Frühkindliche Bildung; Frühpädagogik
Abstract	Purpose: The present study examined associations of 5 endophenotypes (i.e., measurable skills that are closely associated with speech sound disorders and are useful in detecting genetic influences on speech sound production), oral motor skills, phonological memory, phonological awareness, vocabulary, and speeded naming, with 3 clinical criteria for classifying speech sound disorders: severity of speech sound disorders, our previously reported clinical subtypes (speech sound disorders alone, speech sound disorders with language impairment, and childhood apraxia of speech), and the comorbid condition of reading disorders. Participants and Method: Children with speech sound disorders and their siblings were assessed at early childhood (ages 4-7 years) on measures of the 5 endophenotypes. Severity of speech sound disorders was determined using the z score for Percent Consonants Correct-Revised (developed by Shriberg, Austin, Lewis, McSweeny, & Wilson, 1997). Analyses of variance were employed to determine how these endophenotypes differed among the clinical subtypes of speech sound disorders. Results and Conclusions: Phonological memory was related to all 3 clinical classifications of speech sound disorders. Our previous subtypes of speech sound disorders and comorbid conditions of language impairment and reading disorder were associated with phonological awareness, while severity of speech sound disorders was weakly associated with this endophenotype. Vocabulary was associated with mild versus moderate speech sound disorders, as well as comorbid conditions of language impairment and reading disorder. These 3 endophenotypes proved useful in differentiating subtypes of speech sound disorders and in validating current clinical classifications of speech sound disorders. (As Provided).
Anmerkungen	Lippincott Williams & Wilkins. 351 West Camden Street, Baltimore, MD 21201. Tel: 800-638-3030; e-mail: customerservice@lww.com; Web site: http://www.lww.com
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10