The Impact of Lexical and Articulatory Factors in the Automatic Selection of Test Materials for a Web-Based Assessment of Intelligibility in Dysarthria.
Purpose: The clinical assessment of intelligibility must be based on a large repository and extensive variation of test materials, to render test stimuli unpredictable and thereby avoid expectancies and familiarity effects in the listeners. At the same time, it is essential that test materials are s...
| Publicado en: | Journal of Speech, Language & Hearing Research Vol. 64; pp. 2196 - 2213 |
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| Autores principales: | , |
| Formato: | Artículo |
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American Speech-Language-Hearing Association
2021 Supplement
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=151199866&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 151199866 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 10924388 1SM jtl: Journal of Speech, Language & Hearing Research issn: 10924388 maglogo: N pubinfo: dt: 2021 Supplement vid: 64 pid: 42 pub: American Speech-Language-Hearing Association artinfo: ui: 151199866 10.1044/2020_JSLHR-20-00267 ppf: 2196 ppct: 17 formats: fmt: @attributes: type: P size: 1.2MB tig: atl: The Impact of Lexical and Articulatory Factors in the Automatic Selection of Test Materials for a Web-Based Assessment of Intelligibility in Dysarthria. aug: au: Lehner, Katharina Ziegler, Wolfram affil: Clinical Neuropsychology Research Group, Institute of Phonetics and Speech Processing, Ludwig Maximilians University, Munich, Germany su: Germany Crowdsourcing Internet Psychology Communicative disorders Phonetics Intelligibility of speech Dysarthria Lexical grammar Articulation (Speech) Vocabulary tests Transcription (Linguistics) Sentences (Grammar) Phonological awareness Physiological aspects of speech Rehabilitation centers Research methodology Mathematical models Regression analysis Random forest algorithms Inter-observer reliability Descriptive statistics Statistical sampling Listening sug: subj: Crowdsourcing Internet Psychology Communicative disorders Phonetics Germany Internet Publishing and Broadcasting and Web Search Portals Wired Telecommunications Carriers Other Individual and Family Services Residential Mental Health and Substance Abuse Facilities Psychiatric and Substance Abuse Hospitals Marketing Research and Public Opinion Polling Intelligibility of speech Dysarthria Lexical grammar Articulation (Speech) Vocabulary tests Transcription (Linguistics) Sentences (Grammar) Phonological awareness Physiological aspects of speech Rehabilitation centers Research methodology Mathematical models Regression analysis Random forest algorithms Inter-observer reliability Descriptive statistics Statistical sampling Listening ab: Purpose: The clinical assessment of intelligibility must be based on a large repository and extensive variation of test materials, to render test stimuli unpredictable and thereby avoid expectancies and familiarity effects in the listeners. At the same time, it is essential that test materials are systematically controlled for factors influencing intelligibility. This study investigated the impact of lexical and articulatory characteristics of quasirandomly selected target words on intelligibility in a large sample of dysarthric speakers under clinical examination conditions. Method: Using the clinical assessment tool KommPaS, a total of 2,700 sentence-embedded target words, quasirandomly drawn from a large corpus, were spoken by a group of 100 dysarthric patients and later transcribed by listeners recruited via online crowdsourcing. Transcription accuracy was analyzed for influences of lexical frequency, phonological neighborhood structure, articulatory complexity, lexical familiarity, word class, stimulus length, and embedding position. Classification and regression analyses were performed using random forests and generalized linear mixed models. Results: Across all degrees of severity, target words with higher frequency, fewer and less frequent phonological neighbors, higher articulatory complexity, and higher lexical familiarity received significantly higher intelligibility scores. In addition, target words were more challenging sentenceinitially than in medial or final position. Stimulus length had mixed effects; word length and word class had no effect. Conclusions: In a large-scale clinical examination of intelligibility in speakers with dysarthria, several wellestablished influences of lexical and articulatory parameters could be replicated, and the roles of new factors were discussed. This study provides clues about how experimental rigor can be combined with clinical requirements in the diagnostics of communication impairment in patients with dysarthria. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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