Progress Toward Estimating the Minimal Clinically Important Difference of Intelligibility: A Crowdsourced Perceptual Experiment

Journal of Speech Language and Hearing Research, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 15

Published: Oct. 24, 2024

Purpose: The purpose of the current study was to estimate minimal clinically important difference (MCID) sentence intelligibility in control speakers and with dysarthria due multiple sclerosis (MS) Parkinson's disease (PD). Method: Sixteen speakers, 16 MS, PD were audio-recorded reading aloud sentences habitual, clear, fast, loud, slow speaking conditions. Two hundred forty nonexpert crowdsourced listeners heard paired conditions same content from a speaker indicated if one condition more understandable than another. Listeners then used Global Ratings Change (GROC) Scale indicate how much that other. Listener ratings compared objective scores obtained previously via orthographic transcriptions listeners. Receiver operating characteristic (ROC) curves average magnitude per level GROC evaluated determine sensitivity, specificity, accuracy potential cutoff for establishing thresholds change. Results: MCIDs derived ROC invalid. However, valid useful thresholds. MCID determined be about 7% small amount 15% large difference. Conclusions: This work demonstrates feasibility novel experimental paradigm collecting perceptual data MCIDs. Results provide empirical evidence clinical tools perception by could consist three categories, which emerged (“no difference,” “a little bit lot difference”). is critical step toward development universal language evaluate changes as result neurological injury, progression, speech-language therapy.

Language: Английский

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Speech development between 30 and 119 months in typical children III: Interaction between speaking rate and intelligibility

Published: May 24, 2024

Purpose: Earlier work has established developmental benchmarks for intelligibility and articulation rate, but the intersection of these two variables remains unexplored. This study examines interaction between speaking rate in typically developing children ages 2;6 9;11 evaluates whether show a speed-accuracy tradeoff their habitual speech production.Method: Speech samples varying lengths were collected from 538 children. Intelligibility was measured as number words correctly transcribed by untrained adult listeners, calculated syllables per second. Regression models estimated effects age, utterance length, on intelligibility.Results: increased with age decreased length. There trend to decrease especially longer utterances. At individual level, most had negative effective intelligibility. Conclusions: Our findings support hypothesis that children’s is subject where leads reduced articulatory accuracy hence Further research needed how apply this clinical setting.

Language: Английский

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The Impact of Clear and Loud Speech Cues on Acoustic and Perceptual Features of Speech Production in Adolescents With Down Syndrome

American Journal of Speech-Language Pathology, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 17

Published: Nov. 18, 2024

Purpose: There are few evidence-based speech interventions designed to alter production in a way that ultimately results increased intelligibility adolescents with Down syndrome (DS). The primary purpose of this study was examine the impact clear and loud cues on acoustic perceptual features DS. Method: Eight diagnosed DS repeated sentences varying lengths three conditions: habitual, big mouth (i.e., speech), strong voice speech). Four hundred eighty adult listeners (20 per adolescent condition) provided orthographic transcriptions adolescent's speech, which were used calculate scores. Acoustic measures rate, articulation proportion time spent pausing, vocal intensity, fundamental frequency calculated for each sentence. Results: condition resulted significantly intelligibility, slowed rates, pauses, frequency. intensity frequency, but no other changes. Speech rate only variable explained any variance intelligibility. Conclusions: Adolescents respond differently cues. In particular, significant increases did not. Clear hold promise as an intervention strategy

Language: Английский

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A Preliminary Investigation of Within-Word Silent Intervals Produced by Children With and Without Neurodevelopmental Disorders

American Journal of Speech-Language Pathology, Journal Year: 2024, Volume and Issue: 33(5), P. 2618 - 2635

Published: July 4, 2024

Purpose: The categorization of silent intervals during speech production is necessary for accurate measurement articulation rate and pauses. primary purpose this preliminary study was to examine the within-word interval associated with stop closure in word-final consonants produced by children without neurodevelopmental disorders. Method: Seven diagnosed either cerebral palsy or Down syndrome (i.e., disorders) eight typically developing a reading passage. Participants were between ages 11 16 years. Fifty-eight words from passage identified as having consonants. duration consonant calculated, both absolute percent pause time. entire calculated. number durations that met exceeded minimum threshold be considered (150 ms) examined descriptively. Results: Children disorders significantly longer slower rates than children. pause, but children, generally, did not. Conclusion: These data indicate need location meet correct articulatory events pauses

Language: Английский

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Speech Development Between 30 and 119 Months in Typical Children III: Interaction Between Speaking Rate and Intelligibility

Journal of Speech Language and Hearing Research, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 12

Published: Dec. 16, 2024

Purpose: Earlier work has established developmental benchmarks for intelligibility and articulation rate, but the intersection of these two variables, especially within individual children, received limited attention. This study examines interaction between speaking rate in typically developing children ages 2;6 9;11 (years;months) evaluates whether show a speed–accuracy trade-off their habitual speech production. Method: Speech samples varying lengths were collected from 538 children. Intelligibility was measured as number words correctly transcribed by untrained adult listeners, calculated syllables per second. Regression models estimated effects age, utterance length, on intelligibility. Results: positively correlated overall weakly after adjusting age. In regression analyses, increased with age decreased there trend to decrease longer utterances. At level, most negative effect Conclusions: Our findings provide evidence large-scale sample hypothesis that children's is subject where leads reduced articulatory accuracy hence Further research needed how apply this clinical setting. Supplemental Material: https://doi.org/10.23641/asha.27964125

Language: Английский

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