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Error Consistency in Acquired Apraxia of Speech with Aphasia: Effects of the Analysis Unit

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Title: Error Consistency in Acquired Apraxia of Speech with Aphasia: Effects of the Analysis Unit
Language: English
Authors: Haley, Katarina L., Cunningham, Kevin T., Eaton, Catherine Torrington, Jacks, Adam
Source: Journal of Speech, Language, and Hearing Research. Feb 2018 61(2):210-226.
Availability: American Speech-Language-Hearing Association. 2200 Research Blvd #250, Rockville, MD 20850. Tel: 301-296-5700; Fax: 301-296-8580; e-mail: slhr@asha.org; Web site: http://jslhr.pubs.asha.org
Peer Reviewed: Y
Page Count: 17
Publication Date: 2018
Document Type: Journal Articles
Reports - Research
Descriptors: Neurological Impairments, Speech Impairments, Aphasia, Clinical Diagnosis, Error Patterns, Speech Communication, Correlation
DOI: 10.1044/2017_JSLHR-S-16-0381
ISSN: 1092-4388
Abstract: Purpose: Diagnostic recommendations for acquired apraxia of speech (AOS) have been contradictory concerning whether speech sound errors are consistent or variable. Studies have reported divergent findings that, on face value, could argue either for or against error consistency as a diagnostic criterion. The purpose of this study was to explain discrepancies in error consistency results based on the unit of analysis (segment, syllable, or word) to help determine which diagnostic recommendation is most appropriate. Method: We analyzed speech samples from 14 left-hemisphere stroke survivors with clinical diagnoses of AOS and aphasia. Each participant produced 3 multisyllabic words 5 times in succession. Broad phonetic transcriptions of these productions were coded for consistency of error location and type using the word and its constituent syllables and sound segments as units of analysis. Results: Consistency of error type varied systematically with the unit of analysis, showing progressively greater consistency as the analysis unit changed from the word to the syllable and then to the sound segment. Consistency of error location varied considerably across participants and correlated positively with error frequency. Conclusions: Low to moderate consistency of error type at the word level confirms original diagnostic accounts of speech output and sound errors in AOS as variable in form. Moderate to high error type consistency at the syllable and sound levels indicate that phonetic error patterns are present. The results are complementary and logically compatible with each other and with the literature.
Abstractor: As Provided
Entry Date: 2018
Accession Number: EJ1171926
Database: ERIC
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  Data: Error Consistency in Acquired Apraxia of Speech with Aphasia: Effects of the Analysis Unit
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  Data: <searchLink fieldCode="AR" term="%22Haley%2C+Katarina+L%2E%22">Haley, Katarina L.</searchLink><br /><searchLink fieldCode="AR" term="%22Cunningham%2C+Kevin+T%2E%22">Cunningham, Kevin T.</searchLink><br /><searchLink fieldCode="AR" term="%22Eaton%2C+Catherine+Torrington%22">Eaton, Catherine Torrington</searchLink><br /><searchLink fieldCode="AR" term="%22Jacks%2C+Adam%22">Jacks, Adam</searchLink>
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  Data: <searchLink fieldCode="SO" term="%22Journal+of+Speech%2C+Language%2C+and+Hearing+Research%22"><i>Journal of Speech, Language, and Hearing Research</i></searchLink>. Feb 2018 61(2):210-226.
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  Data: American Speech-Language-Hearing Association. 2200 Research Blvd #250, Rockville, MD 20850. Tel: 301-296-5700; Fax: 301-296-8580; e-mail: slhr@asha.org; Web site: http://jslhr.pubs.asha.org
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  Data: 17
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  Data: <searchLink fieldCode="DE" term="%22Neurological+Impairments%22">Neurological Impairments</searchLink><br /><searchLink fieldCode="DE" term="%22Speech+Impairments%22">Speech Impairments</searchLink><br /><searchLink fieldCode="DE" term="%22Aphasia%22">Aphasia</searchLink><br /><searchLink fieldCode="DE" term="%22Clinical+Diagnosis%22">Clinical Diagnosis</searchLink><br /><searchLink fieldCode="DE" term="%22Error+Patterns%22">Error Patterns</searchLink><br /><searchLink fieldCode="DE" term="%22Speech+Communication%22">Speech Communication</searchLink><br /><searchLink fieldCode="DE" term="%22Correlation%22">Correlation</searchLink>
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  Data: 10.1044/2017_JSLHR-S-16-0381
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  Data: 1092-4388
– Name: Abstract
  Label: Abstract
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  Data: Purpose: Diagnostic recommendations for acquired apraxia of speech (AOS) have been contradictory concerning whether speech sound errors are consistent or variable. Studies have reported divergent findings that, on face value, could argue either for or against error consistency as a diagnostic criterion. The purpose of this study was to explain discrepancies in error consistency results based on the unit of analysis (segment, syllable, or word) to help determine which diagnostic recommendation is most appropriate. Method: We analyzed speech samples from 14 left-hemisphere stroke survivors with clinical diagnoses of AOS and aphasia. Each participant produced 3 multisyllabic words 5 times in succession. Broad phonetic transcriptions of these productions were coded for consistency of error location and type using the word and its constituent syllables and sound segments as units of analysis. Results: Consistency of error type varied systematically with the unit of analysis, showing progressively greater consistency as the analysis unit changed from the word to the syllable and then to the sound segment. Consistency of error location varied considerably across participants and correlated positively with error frequency. Conclusions: Low to moderate consistency of error type at the word level confirms original diagnostic accounts of speech output and sound errors in AOS as variable in form. Moderate to high error type consistency at the syllable and sound levels indicate that phonetic error patterns are present. The results are complementary and logically compatible with each other and with the literature.
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      – SubjectFull: Speech Impairments
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      – SubjectFull: Aphasia
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      – SubjectFull: Error Patterns
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