Extensions to the Speech Disorders Classification System (SDCS)
Lawrence D. Shriberg,Marios Fourakis,Sheryl D. Hall,Heather B. Karlsson,Heather L. Lohmeier,Jane L. McSweeny,Nancy L. Potter,Alison R. Scheer-Cohen,Edythe A. Strand,Christie M. Tilkens,David L. Wilson +10 more
TLDR
Examples of research using the extensions to the SDCS described in the present report include diagnostic findings for a sample of youth with motor speech disorders associated with galactosemia, and a test of the hypothesis of apraxia of speech in a group of children with autism spectrum disorders.Abstract:
This report describes three extensions to a classification system for paediatric speech sound disorders termed the Speech Disorders Classification System (SDCS) Part I describes a classification extension to the SDCS to differentiate motor speech disorders from speech delay and to differentiate among three sub-types of motor speech disorders Part II describes the Madison Speech Assessment Protocol (MSAP), an ∼ 2-hour battery of 25 measures that includes 15 speech tests and tasks Part III describes the Competence, Precision, and Stability Analytics (CPSA) framework, a current set of ∼ 90 perceptual- and acoustic-based indices of speech, prosody, and voice used to quantify and classify sub-types of Speech Sound Disorders (SSD) A companion paper provides reliability estimates for the perceptual and acoustic data reduction methods used in the SDCS The agreement estimates in the companion paper support the reliability of SDCS methods and illustrate the complementary roles of perceptual and acoustic methods in diagnostic analyses of SSD of unknown origin Examples of research using the extensions to the SDCS described in the present report include diagnostic findings for a sample of youth with motor speech disorders associated with galactosemia, and a test of the hypothesis of apraxia of speech in a group of children with autism spectrum disorders All SDCS methods and reference databases running in the PEPPER (Programs to Examine Phonetic and Phonologic Evaluation Records) environment will be disseminated without cost when completeread more
Citations
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Journal ArticleDOI
Prevalence and phenotype of childhood apraxia of speech in youth with galactosemia.
TL;DR: The authors estimate the prevalence of CAS in galactosemia at 18 per hundred-180 times the estimated risk for idiopathic CAS, and findings support the need to study risk factors for the high occurrence of motor speech disorders in galACTosemia despite early compliant dietary management.
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The Hypothesis of Apraxia of Speech in Children with Autism Spectrum Disorder
TL;DR: Double dissociations in speech, prosody, and voice impairments in ASD were interpreted as consistent with a speech attunement framework, rather than with the motor speech impairments that define CAS.
Journal ArticleDOI
Differential Diagnosis of Children with Suspected Childhood Apraxia of Speech
TL;DR: Polysyllabic production accuracy and an oral motor examination that includes diadochokinesis may be sufficient to reliably identify CAS and rule out structural abnormality or dysarthria.
Journal ArticleDOI
Encoding, Memory, and Transcoding Deficits in Childhood Apraxia of Speech
TL;DR: Speakers with CAS have speech processing deficits in encoding, memory, and transcoding, according to the Syllable Repetition Task (SRT).
Journal ArticleDOI
A set of regulatory genes co-expressed in embryonic human brain is implicated in disrupted speech development
Else Eising,Amaia Carrion-Castillo,Arianna Vino,Edythe A. Strand,Kathy J. Jakielski,Thomas S. Scerri,Thomas S. Scerri,Michael S. Hildebrand,Richard Webster,Alan Ma,Bernard Mazoyer,Clyde Francks,Clyde Francks,Melanie Bahlo,Melanie Bahlo,Ingrid E. Scheffer,Ingrid E. Scheffer,Angela T Morgan,Lawrence D. Shriberg,Simon E. Fisher,Simon E. Fisher +20 more
TL;DR: This study sequenced whole genomes of nineteen unrelated individuals diagnosed with childhood apraxia of speech and identified novel loss-of-function variants affecting KAT6A, SETBP1, ZFHX4, TNRC6B and MKL2, regulatory genes with links to neurodevelopment.
References
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