TY - JOUR
T1 - A multidimensional investigation of children's /r/ productions
T2 - Perceptual, ultrasound, and acoustic measures
AU - Klein, Harriet B.
AU - McAllister Byun, Tara
AU - Davidson, Lisa
AU - Grigos, Maria I.
N1 - Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2013/8/1
Y1 - 2013/8/1
N2 - Purpose: This study explored relationships among perceptual, ultrasound, and acoustic measurements of children's correct and misarticulated /r/ sounds. Longitudinal data documenting changes across these parameters were collected from 2 children who acquired /r/ over a period of intervention and were compared with data from children with typical speech. Method: Participants were 3 children with typical speech, recorded once, and 2 children with /r/ misarticulation, recorded over 7-8 months. The following data from /r/ produced in nonwords were collected: perceptually rated accuracy, ultrasound measures of tongue shape, and F3 - F2 distance. Results: Regression models revealed significant associations among perceptual, ultrasound, and acoustic measures of /r/ accuracy. The inclusion of quantitative tongue-shape measurements improved the match between the ultrasound and perceptual/acoustic data. Perceptually incorrect /r/ productions were found to feature posteriorly located peaked tongue shapes. Of the children who were seen longitudinally, 1 developed a bunched /r/ and 1 demonstrated retroflexion. The children with typical speech also differed in their tongue shapes. Conclusion: Results support the validity of using qualitative and quantitative ultrasound measures to characterize the accuracy of children's /r/ sounds. Clinically, findings suggest that it is important to encourage pharyngeal constriction while allowing children to find the /r/ tongue shape that best fits their individual vocal tract.
AB - Purpose: This study explored relationships among perceptual, ultrasound, and acoustic measurements of children's correct and misarticulated /r/ sounds. Longitudinal data documenting changes across these parameters were collected from 2 children who acquired /r/ over a period of intervention and were compared with data from children with typical speech. Method: Participants were 3 children with typical speech, recorded once, and 2 children with /r/ misarticulation, recorded over 7-8 months. The following data from /r/ produced in nonwords were collected: perceptually rated accuracy, ultrasound measures of tongue shape, and F3 - F2 distance. Results: Regression models revealed significant associations among perceptual, ultrasound, and acoustic measures of /r/ accuracy. The inclusion of quantitative tongue-shape measurements improved the match between the ultrasound and perceptual/acoustic data. Perceptually incorrect /r/ productions were found to feature posteriorly located peaked tongue shapes. Of the children who were seen longitudinally, 1 developed a bunched /r/ and 1 demonstrated retroflexion. The children with typical speech also differed in their tongue shapes. Conclusion: Results support the validity of using qualitative and quantitative ultrasound measures to characterize the accuracy of children's /r/ sounds. Clinically, findings suggest that it is important to encourage pharyngeal constriction while allowing children to find the /r/ tongue shape that best fits their individual vocal tract.
KW - Acoustics
KW - Articulation
KW - Speech production
KW - Speech sound disorders
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U2 - 10.1044/1058-0360(2013/12-0137)
DO - 10.1044/1058-0360(2013/12-0137)
M3 - Article
C2 - 23813195
AN - SCOPUS:84880948191
VL - 22
SP - 540
EP - 553
JO - American Journal of Speech-Language Pathology
JF - American Journal of Speech-Language Pathology
SN - 1058-0360
IS - 3
ER -