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Dealing with the unknown - addressing challenges in evaluating unintelligible speech
Mirjam Öster Cattu Alves1, Carina Ode1, Sofia Strömbergsson2
1Department of Neuroscience, Uppsala University, Uppsala, Sweden.
Clinical Linguistics & Phonetics
|June 1, 2019
Summary
A new measure, the Percentage of Intelligible and Correct Syllables (PICS), accurately quantifies speech production, even in unintelligible speech. Concurrent commenting is a promising task for eliciting connected speech in children with speech sound disorders.
Area of Science:
- Speech-language pathology
- Linguistics
- Child development
Background:
- Assessing speech production in children with speech sound disorders (SSD) is crucial.
- The standard Percentage of Consonants Correct (PCC) is limited as it excludes unintelligible speech.
- There is a need for a quantification method that includes unintelligible speech portions.
Purpose of the Study:
- To evaluate the Percentage of Intelligible and Correct Syllables (PICS) as a novel measure of speech production.
- To assess the construct validity of PICS by comparing it with PCC-Revised (PCC-R).
- To explore concurrent commenting as a method for eliciting connected speech in children with SSD.
Main Methods:
- Nine children with SSD participated in four tasks: word imitation, picture naming, concurrent commenting, and free conversation.
- Speech accuracy was measured using PCC-R and PICS.
- Intelligibility was assessed using the Proportion of Intelligible Syllables (PINTS).
Main Results:
- A strong correlation was found between PICS and PCC-R, supporting PICS's construct validity.
- A moderate correlation was observed between PICS and PINTS, indicating they measure related but distinct constructs.
- No significant differences in articulation or intelligibility were found between concurrent commenting and free conversation, though further research is needed.
Conclusions:
- PICS is a valid measure for quantifying speech production, including unintelligible segments.
- Concurrent commenting shows potential as a controlled method for eliciting connected speech in children with SSD.
- Further investigation is warranted to confirm the utility of concurrent commenting for speech analysis.
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