scholarly journals Fricative Contrast and Coarticulation in Children With and Without Speech Sound Disorders

2017 ◽  
Vol 26 (2S) ◽  
pp. 649-663 ◽  
Author(s):  
Edwin Maas ◽  
Marja-Liisa Mailend
Keyword(s):  
Speech Sound ◽  
Speech Development ◽  
Typically Developing ◽  
Speech Sound Disorders ◽  
Childhood Apraxia Of Speech ◽  
Typically Developing Children ◽  
Cross Sectional ◽  
Acoustic Measures ◽  
Link Type ◽  
Cross Sectional Design

Purpose The purpose of this study was, first, to expand our understanding of typical speech development regarding segmental contrast and anticipatory coarticulation, and second, to explore the potential diagnostic utility of acoustic measures of fricative contrast and anticipatory coarticulation in children with speech sound disorders (SSD). Method In a cross-sectional design, 10 adults, 17 typically developing children, and 11 children with SSD repeated carrier phrases with novel words with fricatives (/s/, /ʃ/). Dependent measures were 2 ratios derived from spectral mean, obtained from perceptually accurate tokens. Group analyses compared adults and typically developing children; individual children with SSD were compared to their respective typically developing peers. Results Typically developing children demonstrated smaller fricative acoustic contrast than adults but similar coarticulatory patterns. Three children with SSD showed smaller fricative acoustic contrast than their typically developing peers, and 2 children showed abnormal coarticulation. The 2 children with abnormal coarticulation both had a clinical diagnosis of childhood apraxia of speech; no clear pattern was evident regarding SSD subtype for smaller fricative contrast. Conclusions Children have not reached adult-like speech motor control for fricative production by age 10 even when fricatives are perceptually accurate. Present findings also suggest that abnormal coarticulation but not reduced fricative contrast is SSD-subtype–specific. Supplemental Materials S1: https://doi.org/10.23641/asha.5103070 . S2 and S3: https://doi.org/10.23641/asha.5106508

A Framework of Motoric Complexity: An Investigation in Children With Typical and Impaired Speech Development

2020 ◽  
Vol 63 (10) ◽  
pp. 3326-3348
Author(s):  
Julie Case ◽  
Maria I. Grigos
Keyword(s):  
Speech Production ◽  
Speech Sound ◽  
Speech Development ◽  
Speech Sound Disorders ◽  
Childhood Apraxia Of Speech ◽  
Motor Variability ◽  
Kinematic Data ◽  
Sound Sequence ◽  
Impaired Speech ◽  
Speech Motor

Introduction The current work presents a framework of motoric complexity where stimuli differ according to movement elements across a sound sequence (i.e., consonant transitions and vowel direction). This framework was then examined in children with childhood apraxia of speech (CAS), other speech sound disorders (SSDs), and typical development (TD). Method Twenty-four children (CAS, n = 8; SSD, n = 8; TD, n = 8), 5–6 years of age, participated in this study. The children produced words that varied in motoric complexity while transcription, acoustic, and kinematic data were collected. Multidimensional analyses were conducted to examine speech production accuracy, speech motor variability, and temporal control. Results Analyses revealed poorer accuracy, longer movement duration, and greater speech motor variability in children with CAS than TD (across all measures) and other SSDs (accuracy and variability). All children demonstrated greater speech motor variability and longer duration as movement demands increased within the framework of motoric complexity. Diagnostic grouping did not mediate performance on this task. Conclusions Results of this study are believed to reveal gradations of complexity with increasing movement demands, thereby supporting the proposed framework of motoric complexity. This work also supports the importance of considering motoric properties of sound sequences when evaluating speech production skills and designing experimental and treatment stimuli.

Speech development between 30 and 119 months in typical children II: Articulation rate growth curves

2021 ◽  
Author(s):  
Tristan Mahr ◽  
Jennifer U. Soriano ◽  
Paul J. Rathouz ◽  
Katherine Hustad
Keyword(s):  
Middle Childhood ◽  
Growth Curves ◽  
Cross Sectional Study ◽  
Speech Development ◽  
Typically Developing ◽  
Articulation Rate ◽  
Typically Developing Children ◽  
Cross Sectional ◽  
Normative Growth ◽  
Utterance Length

Purpose: We aimed to develop normative growth curves for articulation rate during sentence repetition for typically developing children. Our primary goal was the development of quantile/percentile growth curves, so that typical variation in articulation rate with age could be estimated. We also estimated when children became adultlike in their articulation rate and we examined the contributions of age and utterance length to articulation rate.Method: This cross-sectional study involved collection of in-person speech samples from 570 typically developing children (297 girls; 273 boys) who passed speech, language, and hearing screening measures. Pauses greater than 150 ms in duration were removed from the samples, and articulation rate was measured in syllables per second (sps).Results: Articulation rate reliably increased with age and utterance length. Rate in all key percentiles increased with age. The median rate (50th percentile) increased from 2.7 sps at 36 months to 3.3 sps at 96 months. The 5th percentile increased from 2.3 to 3.1 sps over the same age range. Using 3.2 sps as a benchmark for adultlike speech, we found the 25th, 50th, and 75th percentiles reached adultlike rates at 99, 75, and 53 months, respectively.Conclusions: Articulation rate increases from early childhood into middle childhood, and it is generally adultlike by 10 years of age. Variability in articulation rate among typical children was substantial. Implications for prior research and for clinical usage are discussed.

scholarly journals Speech Development Between 30 and 119 Months in Typical Children II: Articulation Rate Growth Curves

2021 ◽  
pp. 1-14
Author(s):  
Tristan J. Mahr ◽  
Jennifer U. Soriano ◽  
Paul J. Rathouz ◽  
Katherine C. Hustad
Keyword(s):  
Middle Childhood ◽  
Growth Curves ◽  
Cross Sectional Study ◽  
Speech Development ◽  
Typically Developing ◽  
Articulation Rate ◽  
Typically Developing Children ◽  
Cross Sectional ◽  
Normative Growth ◽  
Utterance Length

Purpose We aimed to develop normative growth curves for articulation rate during sentence repetition for typically developing children. Our primary goal was the development of quantile/percentile growth curves so that typical variation in articulation rate with age could be estimated. We also estimated when children became adultlike in their articulation rate, and we examined the contributions of age and utterance length to articulation rate. Method This cross-sectional study involved collection of in-person speech samples from 570 typically developing children (297 girls; 273 boys) who passed speech, language, and hearing screening measures. Pauses greater than 150 ms in duration were removed from the samples, and articulation rate was measured in syllables per second (sps). Results Articulation rate reliably increased with age and utterance length. Rate in all key percentiles increased with age. The median rate (50th percentile) increased from 2.7 sps at 36 months to 3.3 sps at 96 months. The 5th percentile increased from 2.3 to 3.1 sps over the same age range. Using 3.2 sps as a benchmark for adultlike speech, we found the 25th, 50th, and 75th percentiles reached adultlike rates at 99, 75, and 53 months, respectively. Conclusions Articulation rate increases from early childhood into middle childhood, and it is generally adultlike by 10 years of age. Variability in articulation rate among typical children was substantial. Implications for prior research and for clinical usage are discussed.

After Dismissal: Examining the Language, Literacy, and Cognitive Skills of Children With Remediated Speech Sound Disorders

2015 ◽  
Vol 16 (2) ◽  
pp. 50-59 ◽  
Author(s):  
Kelly Farquharson
Keyword(s):  
Public Schools ◽  
Speech Production ◽  
Cognitive Skills ◽  
Speech Sound ◽  
Typically Developing ◽  
Speech Sound Disorders ◽  
Academic Difficulties ◽  
The Public ◽  
Age Appropriate ◽  
Language Literacy

Speech sound disorders are a complex and often persistent disorder in young children. For many children, therapy results in successful remediation of the errored productions as well as age-appropriate literacy and academic progress. However, for some children, while they may attain age-appropriate speech production skills, they later have academic difficulties. For SLPs in the public schools, these children present as challenging in terms of both continuing treatment as well as in terms of caseload management. What happens after dismissal? Have these children truly acquired adequate speech production skills? Do they have lingering language, literacy, and cognitive deficits? The purpose of this article is to describe the language, literacy, and cognitive features of a small group of children with remediated speech sound disorders compared to their typically developing peers.

scholarly journals The Association between Difficulties with Speech Fluency and Language Skills in a National Age Cohort of Children with Down Syndrome

2021 ◽  
Vol 11 (6) ◽  
pp. 704
Author(s):  
Kari-Anne B. Næss ◽  
Egil Nygaard ◽  
Hilde Hofslundsengen ◽  
J. Scott Yaruss
Keyword(s):  
Down Syndrome ◽  
Language Skills ◽  
Typically Developing ◽  
Typically Developing Children ◽  
Cross Sectional ◽  
Exact Test ◽  
Children With Down Syndrome ◽  
Speech Fluency ◽  
Age Cohort ◽  
Student’S T

The present study (a) addressed difficulties in speech fluency in children with Down syndrome and typically developing children at a similar non-verbal level and (b) examined the association between difficulties with speech fluency and language skills in children with Down syndrome. Data from a cross-sectional parent survey that included questions about children’s difficulties with speech fluency, as well as clinical tests from a national age cohort of 43 six-year-olds with Down syndrome and 57 young typically developing children, were collected. Fisher’s exact test, Student’s t-test, linear regression, and density ellipse scatter plots were used for analysis. There was a significantly higher occurrence of parent-reported difficulties with speech fluency in the children with Down syndrome. Higher language scores were significantly associated with a lower degree of difficulties; this association was strongest for vocabulary and phonological skills. Although difficulties with speech fluency were not reported for all children with Down syndrome, a substantially higher occurrence of such difficulties was reported compared to that for typically developing children. The significant association between difficulties with speech fluency and the level of language functioning suggests that speech fluency and language skills should be taken into consideration when planning treatment for children with Down syndrome.

A Survey of the Usage of Nonspeech Oral Motor Exercises by Speech and Language Therapists in the Republic of Ireland

2014 ◽  
Vol 21 (1) ◽  
pp. 1-40
Author(s):  
Alice Lee ◽  
Niamh Moore
Keyword(s):  
Speech Sound ◽  
Speech And Language ◽  
Speech Sound Disorders ◽  
Childhood Apraxia Of Speech ◽  
Online Questionnaire ◽  
Warm Up ◽  
Republic Of Ireland ◽  
Oral Motor ◽  
The Republic ◽  
Oral Motor Exercises

Objective: To collect information on the usage of nonspeech oral motor exercises (NSOMEs) by speech and language therapists (SLTs) for treating speech sound disorders (SSDs) in children in the Republic of Ireland. Method: SLTs who had worked with children with SSDs were invited to complete an online questionnaire adapted from a previous survey conducted in the US by Lof and Watson (2008). Main results:: 22/39 (56%) of the respondents reported using NSOMEs. Information from a colleague about the usefulness of NSOMEs, continuing education, and literature influenced the respondents the most to use NSOMEs. Most respondents used NSOMEs as a “warm up”, mainly with children with childhood apraxia of speech, dysarthria, and Down Syndrome. Conclusion: NSOMEs are used by over half of the respondents despite the lack of evidence that supports this treatment approach. Continuous effort to encourage the application of evidence-based practice in clinics is warranted.

scholarly journals Distinct developmental profiles in typical speech acquisition

2012 ◽  
Vol 107 (10) ◽  
pp. 2885-2900 ◽  
Author(s):  
Jennell C. Vick ◽  
Thomas F. Campbell ◽  
Lawrence D. Shriberg ◽  
Jordan R. Green ◽  
Hervé Abdi ◽  
...  
Keyword(s):  
Speech Development ◽  
Developmental Pathways ◽  
Subgroup Discovery ◽  
Typically Developing ◽  
Speech Acquisition ◽  
Typically Developing Children ◽  
Lower Lip ◽  
Syllable Duration ◽  
High Level ◽  
Syllable Stress

Three- to five-year-old children produce speech that is characterized by a high level of variability within and across individuals. This variability, which is manifest in speech movements, acoustics, and overt behaviors, can be input to subgroup discovery methods to identify cohesive subgroups of speakers or to reveal distinct developmental pathways or profiles. This investigation characterized three distinct groups of typically developing children and provided normative benchmarks for speech development. These speech development profiles, identified among 63 typically developing preschool-aged speakers (ages 36–59 mo), were derived from the children's performance on multiple measures. These profiles were obtained by submitting to a k-means cluster analysis of 72 measures that composed three levels of speech analysis: behavioral (e.g., task accuracy, percentage of consonants correct), acoustic (e.g., syllable duration, syllable stress), and kinematic (e.g., variability of movements of the upper lip, lower lip, and jaw). Two of the discovered group profiles were distinguished by measures of variability but not by phonemic accuracy; the third group of children was characterized by their relatively low phonemic accuracy but not by an increase in measures of variability. Analyses revealed that of the original 72 measures, 8 key measures were sufficient to best distinguish the 3 profile groups.

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