Speech Perception and Lexical Effects in Specific Language Impairment

Autor/inn/en	Schwartz, Richard G.; Scheffler, Frances L. V.; Lopez, Karece
Titel	Speech Perception and Lexical Effects in Specific Language Impairment
Quelle	In: Clinical Linguistics & Phonetics, 27 (2013) 5, S.339-354 (16 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0269-9206
DOI	10.3109/02699206.2013.763386
Schlagwörter	Children; Language Impairments; Speech; Vowels; Phonemes; Auditory Perception; Language Processing; Cues; Age Differences; Stimuli; New York; Clinical Evaluation of Language Fundamentals; Test of Nonverbal Intelligence + Suchen Sie Ihr Suchwort? Child; Kind; Kinder; Speech disorder; Speech disorders; Speech disabilities; Speech disability; Speech handicap; Speech handicaps; Speech impairment; Speech impairments; Language handicaps; Sprachbehinderung; Speaking; Sprechen; Fonem; Auditive Wahrnehmung; Akustische Wahrnehmung; Akustik; Sprachverarbeitung; Stichwort; Age; Difference; Age difference; Altersunterschied; Anreizsystem
Abstract	Using an identification task, we examined lexical effects on the perception of vowel duration as a cue to final consonant voicing in 12 children with specific language impairment (SLI) and 13 age-matched (6;6-9;6) peers with typical language development (TLD). Naturally recorded CVtsets [word-word (WW), nonword-nonword (NN), word-nonword (WN) and nonword-word (NW)] were edited to create four 12-step continua. Both groups used duration as an identification cue but it was a weaker cue for children with SLI. For NN, WN and NW continua, children with SLI demonstrated certainty at shorter vowel durations than their TLD peers. Except for the WN continuum, children with SLI demonstrated category boundaries at shorter vowel durations. Both groups exhibited lexical effects, but they were stronger in the SLI group. Performance on the WW continuum indicated adequate perception of fine-grained duration differences. Strong lexical effects indicated reliance on familiar words in speech perception. (Contains 1 table and 2 figures.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10