Assessing Relative Linguistic Impairment With Model-Based Item Selection.
Purpose: A picture naming test is presented that reveals impairment to specific mechanisms involved in the naming process, using accuracy scores on curated item sets. A series of psychometric validation experiments are reported. Method: Using a computational model that enables estimation of item dif...
| Publicado en: | Journal of Speech, Language & Hearing Research Vol. 67; no. 8; pp. 2600 - 2620 |
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| Autores principales: | , , |
| Formato: | Artículo |
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American Speech-Language-Hearing Association
Aug2024
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| Materias: | |
| 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=178847309&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 178847309 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: Aug2024 vid: 67 iid: 8 pid: 42 pub: American Speech-Language-Hearing Association artinfo: ui: 178847309 10.1044/2024_JSLHR-23-00439 ppf: 2600 ppct: 20 formats: fmt: @attributes: type: P size: 7.9MB tig: atl: Assessing Relative Linguistic Impairment With Model-Based Item Selection. aug: au: Walker, Grant M. Fridriksson, Julius Hickok, Gregory affil: Department of Cognitive Sciences, University of California, Irvine Department of Communication Sciences and Disorders, University of South Carolina, Columbia Department of Language Science, University of California, Irvine su: Cross-sectional method Computer simulation Task performance Speech Linguistics Psycholinguistics Psychometrics Stroke Research funding Academic medical centers T-test (Statistics) Questionnaires Research evaluation Descriptive statistics Magnetic resonance imaging Apraxia Crossover trials Statistical reliability Speech evaluation Visual perception Speech perception Data analysis software Speech therapy Inter-observer reliability Regression analysis Disease complications sug: subj: Cross-sectional method Computer simulation Task performance Speech Linguistics Psycholinguistics Psychometrics Stroke Diagnostic Imaging Centers Research funding Academic medical centers T-test (Statistics) Questionnaires Research evaluation Descriptive statistics Magnetic resonance imaging Apraxia Crossover trials Statistical reliability Speech evaluation Visual perception Speech perception Data analysis software Speech therapy Inter-observer reliability Regression analysis Disease complications ab: Purpose: A picture naming test is presented that reveals impairment to specific mechanisms involved in the naming process, using accuracy scores on curated item sets. A series of psychometric validation experiments are reported. Method: Using a computational model that enables estimation of item difficulty at the lexical and sublexical stages of word retrieval, two complimentary sets of items were constructed that challenge the respective psycholinguistic levels of representation. The difference in accuracy between these item sets yields the relative linguistic impairment (RLI) score. In a cohort of 91 people with chronic left-hemisphere stroke who enrolled in a clinical trial for anomia, we assessed psychometric properties of the RLI score and then used the new scale to make predictions about other language behaviors, lesion distributions, and functional activation during naming. Results: RLI scores had adequate psychometric properties for clinical significance. RLI scores contained predictive information about spontaneous speech fluency, over and above accuracy. A dissociation was observed between performance on the RLI item sets and performance on the subtests of an independent language battery. Sublexical RLI was significantly associated with apraxia of speech and with lesions encompassing perisylvian regions, while lexical RLI was associated with lesions to deep white matter. The RLI construct was reflected in functional brain activity during naming, independent of overall accuracy, with a respective shift of activation between dorsal and ventral networks responsible for different aspects of word retrieval. Conclusion: The RLI assessment satisfies the psychometric requirements to serve as a useful clinical measure. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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