Assessing speech motor skills of CWS and who do not stutter using an innovative, objective acoustic measurement – A study within the OSMOS study
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2025-07-14
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en
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Speech Motor Skills (SMS) in children who stutter are assessed using the subjective Oral Motor Assessment Scale (OMAS). There is a pressing need for an objective instrument capable of providing a more comprehensive evaluation of SMS in this population. The ESTI (Extended Speech Transmission Index) is a score calculated over an acoustic signal. Such an instrument may be the solution.
Children who stutter (CWS) and children who do not stutter (CWNS) aged 7;5 to 10;0 years completed a non-word and Dutch sentence repetition task. At TU Delft, ESTI scores were computed for each item. Item ESTI scores and total ESTI scores were compared between CWS and CWNS. Additionally, two correlational analyses were conducted, between ESTI and OMAS and between ESTI and the percentage of stuttered syllables (%SS).
The results showed that CWS had significantly higher ESTI scores than CWNS. Item-level analysis showed that six items significantly distinguished the two groups, while other items demonstrated either reverse effects or no meaningful differences. The correlational analyses yielded two weak but positive associations between ESTI and OMAS and %SS.
Further research is needed in order to draw clearer and more generalizable conclusions.
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Faculteit der Letteren