TY - JOUR
T1 - A framework of motoric complexity
T2 - An investigation in children with typical and impaired speech development
AU - Case, Julie
AU - Grigos, Maria I.
N1 - Funding Information:
This work was supported by a doctoral student research grant awarded by Apraxia Kids, the ASHFoundation New Century Doctoral Student Scholarship, and NYU Steinhardt research grants. We would like to acknowledge Hailey Kopera, Julia Chang, Lanie Jung, Janelle Brito, Sara Zhong, and Ned Dana for assistance with data collection and processing. We would also like to thank Adam Buchwald, Richard Magill, and Eric Jackson for their support in developing this project. We are grateful to the participants and their families for their dedication to this project.
Publisher Copyright:
© 2020 American Speech-Language-Hearing Association.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/10
Y1 - 2020/10
N2 - 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.
AB - 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.
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U2 - 10.1044/2020_JSLHR-20-00020
DO - 10.1044/2020_JSLHR-20-00020
M3 - Article
C2 - 32946304
AN - SCOPUS:85092580074
SN - 1092-4388
VL - 63
SP - 3326
EP - 3348
JO - Journal of Speech, Language, and Hearing Research
JF - Journal of Speech, Language, and Hearing Research
IS - 10
ER -