Encoding, Memory, and Transcoding Deficits in Childhood Apraxia of Speech

Autor/inn/en	Shriberg, Lawrence D.; Lohmeier, Heather L.; Strand, Edythe A.; Jakielski, Kathy J.
Titel	Encoding, Memory, and Transcoding Deficits in Childhood Apraxia of Speech
Quelle	In: Clinical Linguistics & Phonetics, 26 (2012) 5, S.445-482 (38 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0269-9206
DOI	10.3109/02699206.2012.655841
Schlagwörter	Memory; Cognitive Processes; Auditory Perception; Children; Neurological Impairments; Speech Impairments; Syllables; Repetition + Suchen Sie Ihr Suchwort? Gedächtnis; Cognitive process; Kognitiver Prozess; Auditive Wahrnehmung; Akustische Wahrnehmung; Akustik; Child; Kind; Kinder; Neurodegenerative Erkrankung; Speech impairment; Speech handicap; Speech handicaps; Language handicps; Language impairments; Sprachbehinderung; Silbe; Wiederholung
Abstract	A central question in Childhood Apraxia of Speech (CAS) is whether the core phenotype is limited to transcoding (planning/programming) deficits or if speakers with CAS also have deficits in auditory-perceptual "encoding" (representational) and/or "memory" (storage and retrieval of representations) processes. We addressed this and other questions using responses to the Syllable Repetition Task (SRT) [Shriberg, L. D., Lohmeier, H. L., Campbell, T. F., Dollaghan, C. A., Green, J. R., & Moore, C. A. (2009). A nonword repetition task for speakers with misarticulations: The syllable repetition task (SRT). "Journal of Speech, Language, and Hearing Research", 52, 1189-1212]. The SRT was administered to 369 individuals in four groups: (a) typical speech-language (119), (b) speech delay-typical language (140), (c) speech delay-language impairment (70), and (d) idiopathic or neurogenetic CAS (40). CAS participants had significantly lower SRT competence, encoding, memory, and transcoding scores than controls. They were 8.3 times more likely than controls to have SRT transcoding scores below 80%. We conclude that speakers with CAS have speech processing deficits in encoding, memory, and transcoding. The SRT currently has moderate diagnostic accuracy to identify transcoding deficits, the signature feature of CAS. (Contains 3 figures and 9 tables.) (As Provided).
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Update	2017/4/10