ArticleClinical linguistics & phonetics2019
Estimates of the prevalence of speech and motor speech disorders in adolescents with Down syndrome.
Article in Clinical linguistics & phonetics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.
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Who cites it
22 citing papers in PubMed, 40 citations in OpenAlex.
- Prosodic Imitation in Children With Down Syndrome: Evidence From Sentence Repetition and Pitch Contour Modeling.American journal of speech-language pathology · 2026Article
- Altered motor coordination, vocal communication, and cerebellar circuit connectivity in mice carrying a near-complete human chromosome 21.Translational psychiatry · 2025Article
- Trisomy 21 Alters Motor Coordination, Vocal Communication, and Cerebellar Circuit Connectivity in the TcMAC21 Mouse.Research square · 2025Article
- Automated Assessment of Word- and Sentence-Level Speech Intelligibility in Developmental Motor Speech Disorders: A Cross-Linguistic Investigation.Diagnostics (Basel, Switzerland) · 2025Article
- Biogenesis and function of circular RNAs and their implications in the Down syndrome brain.Frontiers in genetics · 2025Review
- Article
- The Effectiveness of Lee Silverman Voice Treatment (LSVT LOUD) on Children's Speech and Voice: A Scoping Review.Brain sciences · 2024Article
- Enhancing Speech Rehabilitation in a Young Adult with Trisomy 21: Integrating Transcranial Direct Current Stimulation (tDCS) with Rapid Syllable Transition Training for Apraxia of Speech.Brain sciences · 2024Article
- Vocal Characteristics of Infants at Risk for Speech Motor Involvement: A Scoping Review.Journal of speech, language, and hearing research : JSLHR · 2023Article
- Ultrasonic vocalization phenotypes in the Ts65Dn and Dp(16)1Yey mouse models of Down syndrome.Physiology & behavior · 2023Article
- Sentence Length Effects on Intelligibility in Two Groups of Older Children With Neurodevelopmental Disorders.American journal of speech-language pathology · 2023Article
- Differential Impacts of Sentence Length on Speech Rate in Two Groups of Children With Neurodevelopmental Disorders.American journal of speech-language pathology · 2023Article
- Vowel Production in Children and Adults With Down Syndrome: Fundamental and Formant Frequencies of the Corner Vowels.Journal of speech, language, and hearing research : JSLHR · 2023Article
- Communication and Social Interaction Experiences of Youths With Congenital Motor Speech Disorders.American journal of speech-language pathology · 2022Article
- Retrospective Case-Control Study of Communication and Motor Abilities in 143 Children With Suspected Childhood Apraxia of Speech: Effect of Concomitant Diagnosis.Perspectives of the ASHA special interest groups · 2022Article
- Auditory-Perceptual Features of Speech in Children and Adults With Down Syndrome: A Speech Profile Analysis.Journal of speech, language, and hearing research : JSLHR · 2021Article
- Differences and Similarities in Predictors of Expressive Vocabulary Development between Children with Down Syndrome and Young Typically Developing Children.Brain sciences · 2021Article
- Exploring Expressive Communication Skills in a Cross-Sectional Sample of Individuals With a Dual Diagnosis of Autism Spectrum Disorder and Down Syndrome.American journal on intellectual and developmental disabilities · 2021Article
- Estimates of the Prevalence of Speech and Motor Speech Disorders in Youth With 22q11.2 Deletion Syndrome.American journal of speech-language pathology · 2019Article
- Estimates of the prevalence of speech and motor speech disorders in persons with complex neurodevelopmental disorders.Clinical linguistics & phonetics · 2019Article
Corrections and comments
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Authors and funding
4 authors at 4 institutions in 1 country.
Funding
Abstract
Although there is substantial rationale for a motor component in the speech of persons with Down syndrome (DS), there presently are no published estimates of the prevalence of subtypes of motor speech disorders in DS. The goal of this research is to provide initial estimates of the prevalence of types of speech disorders and motor speech disorders in adolescents with DS. Conversational speech samples from a convenience sample of 45 adolescents with DS, ages 10 to 20 years old, were analysed using perceptual and acoustic methods and measures in the Speech Disorders Classification System (SDCS). The SDCS cross-classified participants into five mutually exclusive speech classifications and five mutually exclusive motor speech classifications. For participants meeting criteria for Childhood Dysarthria or for Childhood Dysarthria concurrent with Childhood Apraxia of Speech, the SDCS provided information on participants' percentile status on five subtypes of dysarthria. A total of 97.8% of participants met SDCS criteria for Speech Disorders and 97.8% met criteria for Motor Speech Disorders, including Childhood Dysarthria (37.8%), Speech Motor Delay (26.7%), Childhood Dysarthria and Childhood Apraxia of Speech (22.2%), and Childhood Apraxia of Speech (11.1%). Ataxia was the most prevalent dysarthria subtype. Nearly all participants with DS in the present sample had some type of speech and motor speech disorder, with implications for theory, assessment, prediction, and treatment. Specific to treatment, the present findings are interpreted as support for motor speech disorders as a primary explanatory construct to guide the selection and sequencing of treatment targets for persons with DS.
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