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Reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech
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| Zeitschriftentitel: | International Journal of Language & Communication Disorders |
|---|---|
| Personen und Körperschaften: | , , , |
| In: | International Journal of Language & Communication Disorders, 54, 2019, 6, S. 902-913 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Wiley
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| Schlagwörter: |
| author_facet |
Bailey, Dallin J. Bunker, Lisa Mauszycki, Shannon Wambaugh, Julie L. Bailey, Dallin J. Bunker, Lisa Mauszycki, Shannon Wambaugh, Julie L. |
|---|---|
| author |
Bailey, Dallin J. Bunker, Lisa Mauszycki, Shannon Wambaugh, Julie L. |
| spellingShingle |
Bailey, Dallin J. Bunker, Lisa Mauszycki, Shannon Wambaugh, Julie L. International Journal of Language & Communication Disorders Reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech Speech and Hearing Linguistics and Language Language and Linguistics |
| author_sort |
bailey, dallin j. |
| spelling |
Bailey, Dallin J. Bunker, Lisa Mauszycki, Shannon Wambaugh, Julie L. 1368-2822 1460-6984 Wiley Speech and Hearing Linguistics and Language Language and Linguistics http://dx.doi.org/10.1111/1460-6984.12493 <jats:title>Abstract</jats:title><jats:sec><jats:title>Background</jats:title><jats:p>Acquired apraxia of speech (AOS) involves speech‐production deficits on both the segmental and suprasegmental levels. Recent research has identified a non‐linear interaction between the metrical structure of bisyllabic words and word‐production accuracy in German speakers with AOS, with trochaic words (strong–weak stress) being resistant to errors compared with iambic words (weak–strong).</jats:p></jats:sec><jats:sec><jats:title>Aims</jats:title><jats:p>To replicate previous findings in English speakers with AOS, to measure the test–retest reliability of the effect, and to examine the potential impact of different methods of word scoring.</jats:p></jats:sec><jats:sec><jats:title>Methods & Procedures</jats:title><jats:p>Speech samples were collected from 27 speakers with AOS and aphasia. Participants were at least 12 months post‐stroke or penetrating brain injury, and represented a large range of AOS and aphasia severities. Productions were elicited via verbal model. Sampling was conducted on three separate occasions: the initial data‐collection session and then repeated samplings at 1‐ and 4‐week intervals. Bisyllabic words with a CVCVC segmental structure were selected. The list was divided into sublists representing differing lexical stress patterns: A list of 42 trochees, and one of 37 iambs. All speech samples were phonetically transcribed and then aligned with canonical transcriptions via an edit distance algorithm that followed transcription alignment principles. Phonetic‐level errors (distortions) were penalized less severely than phonemic‐level errors. Per cent consonants correct and whole‐word accuracy were also examined. Trochee and iamb lists were analysed separately.</jats:p></jats:sec><jats:sec><jats:title>Outcomes & Results</jats:title><jats:p>Paired samples <jats:italic>t</jats:italic>‐tests indicated that the modified edit distance was significantly lower for the trochee lists than for the iamb lists. There was a lack of a significant effect of time on the absolute difference between modified edit distance for both lists. Intraclass coefficients suggested the list and procedures used are appropriate as an outcome measure for group research.</jats:p></jats:sec><jats:sec><jats:title>Conclusions & Implications</jats:title><jats:p>The results suggest that in English, as in German, the trochaic structure is more resistant to segmental errors in persons with AOS and aphasia, providing replication of the findings of Aichert <jats:italic>et al</jats:italic>. in 2016. Further, this effect is stable over repeated sampling occasions. Implications for clinical management of AOS include possible ways to scaffold item difficulty and potentially improve stimulus generalization.</jats:p></jats:sec> Reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech International Journal of Language & Communication Disorders |
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International Journal of Language & Communication Disorders |
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| title |
Reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech |
| title_unstemmed |
Reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech |
| title_full |
Reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech |
| title_fullStr |
Reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech |
| title_full_unstemmed |
Reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech |
| title_short |
Reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech |
| title_sort |
reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech |
| topic |
Speech and Hearing Linguistics and Language Language and Linguistics |
| url |
http://dx.doi.org/10.1111/1460-6984.12493 |
| publishDate |
2019 |
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902-913 |
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<jats:title>Abstract</jats:title><jats:sec><jats:title>Background</jats:title><jats:p>Acquired apraxia of speech (AOS) involves speech‐production deficits on both the segmental and suprasegmental levels. Recent research has identified a non‐linear interaction between the metrical structure of bisyllabic words and word‐production accuracy in German speakers with AOS, with trochaic words (strong–weak stress) being resistant to errors compared with iambic words (weak–strong).</jats:p></jats:sec><jats:sec><jats:title>Aims</jats:title><jats:p>To replicate previous findings in English speakers with AOS, to measure the test–retest reliability of the effect, and to examine the potential impact of different methods of word scoring.</jats:p></jats:sec><jats:sec><jats:title>Methods & Procedures</jats:title><jats:p>Speech samples were collected from 27 speakers with AOS and aphasia. Participants were at least 12 months post‐stroke or penetrating brain injury, and represented a large range of AOS and aphasia severities. Productions were elicited via verbal model. Sampling was conducted on three separate occasions: the initial data‐collection session and then repeated samplings at 1‐ and 4‐week intervals. Bisyllabic words with a CVCVC segmental structure were selected. The list was divided into sublists representing differing lexical stress patterns: A list of 42 trochees, and one of 37 iambs. All speech samples were phonetically transcribed and then aligned with canonical transcriptions via an edit distance algorithm that followed transcription alignment principles. Phonetic‐level errors (distortions) were penalized less severely than phonemic‐level errors. Per cent consonants correct and whole‐word accuracy were also examined. Trochee and iamb lists were analysed separately.</jats:p></jats:sec><jats:sec><jats:title>Outcomes & Results</jats:title><jats:p>Paired samples <jats:italic>t</jats:italic>‐tests indicated that the modified edit distance was significantly lower for the trochee lists than for the iamb lists. There was a lack of a significant effect of time on the absolute difference between modified edit distance for both lists. Intraclass coefficients suggested the list and procedures used are appropriate as an outcome measure for group research.</jats:p></jats:sec><jats:sec><jats:title>Conclusions & Implications</jats:title><jats:p>The results suggest that in English, as in German, the trochaic structure is more resistant to segmental errors in persons with AOS and aphasia, providing replication of the findings of Aichert <jats:italic>et al</jats:italic>. in 2016. Further, this effect is stable over repeated sampling occasions. Implications for clinical management of AOS include possible ways to scaffold item difficulty and potentially improve stimulus generalization.</jats:p></jats:sec> |
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| description | <jats:title>Abstract</jats:title><jats:sec><jats:title>Background</jats:title><jats:p>Acquired apraxia of speech (AOS) involves speech‐production deficits on both the segmental and suprasegmental levels. Recent research has identified a non‐linear interaction between the metrical structure of bisyllabic words and word‐production accuracy in German speakers with AOS, with trochaic words (strong–weak stress) being resistant to errors compared with iambic words (weak–strong).</jats:p></jats:sec><jats:sec><jats:title>Aims</jats:title><jats:p>To replicate previous findings in English speakers with AOS, to measure the test–retest reliability of the effect, and to examine the potential impact of different methods of word scoring.</jats:p></jats:sec><jats:sec><jats:title>Methods & Procedures</jats:title><jats:p>Speech samples were collected from 27 speakers with AOS and aphasia. Participants were at least 12 months post‐stroke or penetrating brain injury, and represented a large range of AOS and aphasia severities. Productions were elicited via verbal model. Sampling was conducted on three separate occasions: the initial data‐collection session and then repeated samplings at 1‐ and 4‐week intervals. Bisyllabic words with a CVCVC segmental structure were selected. The list was divided into sublists representing differing lexical stress patterns: A list of 42 trochees, and one of 37 iambs. All speech samples were phonetically transcribed and then aligned with canonical transcriptions via an edit distance algorithm that followed transcription alignment principles. Phonetic‐level errors (distortions) were penalized less severely than phonemic‐level errors. Per cent consonants correct and whole‐word accuracy were also examined. Trochee and iamb lists were analysed separately.</jats:p></jats:sec><jats:sec><jats:title>Outcomes & Results</jats:title><jats:p>Paired samples <jats:italic>t</jats:italic>‐tests indicated that the modified edit distance was significantly lower for the trochee lists than for the iamb lists. There was a lack of a significant effect of time on the absolute difference between modified edit distance for both lists. Intraclass coefficients suggested the list and procedures used are appropriate as an outcome measure for group research.</jats:p></jats:sec><jats:sec><jats:title>Conclusions & Implications</jats:title><jats:p>The results suggest that in English, as in German, the trochaic structure is more resistant to segmental errors in persons with AOS and aphasia, providing replication of the findings of Aichert <jats:italic>et al</jats:italic>. in 2016. Further, this effect is stable over repeated sampling occasions. Implications for clinical management of AOS include possible ways to scaffold item difficulty and potentially improve stimulus generalization.</jats:p></jats:sec> |
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| spelling | Bailey, Dallin J. Bunker, Lisa Mauszycki, Shannon Wambaugh, Julie L. 1368-2822 1460-6984 Wiley Speech and Hearing Linguistics and Language Language and Linguistics http://dx.doi.org/10.1111/1460-6984.12493 <jats:title>Abstract</jats:title><jats:sec><jats:title>Background</jats:title><jats:p>Acquired apraxia of speech (AOS) involves speech‐production deficits on both the segmental and suprasegmental levels. Recent research has identified a non‐linear interaction between the metrical structure of bisyllabic words and word‐production accuracy in German speakers with AOS, with trochaic words (strong–weak stress) being resistant to errors compared with iambic words (weak–strong).</jats:p></jats:sec><jats:sec><jats:title>Aims</jats:title><jats:p>To replicate previous findings in English speakers with AOS, to measure the test–retest reliability of the effect, and to examine the potential impact of different methods of word scoring.</jats:p></jats:sec><jats:sec><jats:title>Methods & Procedures</jats:title><jats:p>Speech samples were collected from 27 speakers with AOS and aphasia. Participants were at least 12 months post‐stroke or penetrating brain injury, and represented a large range of AOS and aphasia severities. Productions were elicited via verbal model. Sampling was conducted on three separate occasions: the initial data‐collection session and then repeated samplings at 1‐ and 4‐week intervals. Bisyllabic words with a CVCVC segmental structure were selected. The list was divided into sublists representing differing lexical stress patterns: A list of 42 trochees, and one of 37 iambs. All speech samples were phonetically transcribed and then aligned with canonical transcriptions via an edit distance algorithm that followed transcription alignment principles. Phonetic‐level errors (distortions) were penalized less severely than phonemic‐level errors. Per cent consonants correct and whole‐word accuracy were also examined. Trochee and iamb lists were analysed separately.</jats:p></jats:sec><jats:sec><jats:title>Outcomes & Results</jats:title><jats:p>Paired samples <jats:italic>t</jats:italic>‐tests indicated that the modified edit distance was significantly lower for the trochee lists than for the iamb lists. There was a lack of a significant effect of time on the absolute difference between modified edit distance for both lists. Intraclass coefficients suggested the list and procedures used are appropriate as an outcome measure for group research.</jats:p></jats:sec><jats:sec><jats:title>Conclusions & Implications</jats:title><jats:p>The results suggest that in English, as in German, the trochaic structure is more resistant to segmental errors in persons with AOS and aphasia, providing replication of the findings of Aichert <jats:italic>et al</jats:italic>. in 2016. Further, this effect is stable over repeated sampling occasions. Implications for clinical management of AOS include possible ways to scaffold item difficulty and potentially improve stimulus generalization.</jats:p></jats:sec> Reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech International Journal of Language & Communication Disorders |
| spellingShingle | Bailey, Dallin J., Bunker, Lisa, Mauszycki, Shannon, Wambaugh, Julie L., International Journal of Language & Communication Disorders, Reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech, Speech and Hearing, Linguistics and Language, Language and Linguistics |
| title | Reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech |
| title_full | Reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech |
| title_fullStr | Reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech |
| title_full_unstemmed | Reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech |
| title_short | Reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech |
| title_sort | reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech |
| title_unstemmed | Reliability and stability of the metrical stress effect on segmental production accuracy in persons with apraxia of speech |
| topic | Speech and Hearing, Linguistics and Language, Language and Linguistics |
| url | http://dx.doi.org/10.1111/1460-6984.12493 |