Shortening the Leuven Perceptual Organization Screening Test With Item Response Theory and Confirmatory Factor Analysis.
The Leuven Perceptual Organization Screening Test (L-POST) is a test for midlevel visual perceptual deficits after brain injury. Previous research demonstrated reliable test scores and valid test score interpretations. However, the test's duration (20–35 min) is too long for a screening approach for...
| Publicado en: | Psychological Assessment Vol. 33; no. 12; pp. 1253 - 1261 |
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| Autores principales: | , , |
| Formato: | Artículo |
| Publicado: |
American Psychological Association
Dec2021
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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=161853280&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 161853280 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 10403590 POL jtl: Psychological Assessment issn: 10403590 maglogo: N pubinfo: dt: Dec2021 vid: 33 iid: 12 pid: 34 pub: American Psychological Association artinfo: ui: 161853280 10.1037/pas0001045 ppf: 1253 ppct: 8 formats: tig: atl: Shortening the Leuven Perceptual Organization Screening Test With Item Response Theory and Confirmatory Factor Analysis. aug: au: Vancleef, Kathleen Demeyere, Nele Sun, Luning affil: Department of Experimental Psychology, University of Oxford Cambridge Judge Business School, The Psychometrics Centre, University of Cambridge su: Item response theory Confirmatory factor analysis Medical screening Edible fats & oils Adaptive testing sug: subj: Item response theory Confirmatory factor analysis Medical screening All Other Miscellaneous Ambulatory Health Care Services Soybean and Other Oilseed Processing Fats and Oils Refining and Blending Edible fats & oils Adaptive testing keyword: computer-adaptive testing confirmatory factor analysis item response theory perceptual organization short form computer-adaptive testing confirmatory factor analysis item response theory perceptual organization short form ab: The Leuven Perceptual Organization Screening Test (L-POST) is a test for midlevel visual perceptual deficits after brain injury. Previous research demonstrated reliable test scores and valid test score interpretations. However, the test's duration (20–35 min) is too long for a screening approach for all patients in clinical practice. Our aim was to shorten L-POST to 10–15 min based on statistical criteria of the items. Data from 3,391 participants who completed L-POST were analyzed. L-POST consists of 15 subtests with five items each. Item Response Theory (IRT) was applied to guide the selection of the items. The highest correlation with full-scale subtest scores was observed when two items were selected for each subtest following an adaptive testing procedure. A pilot validation in a subsample of participants with low abilities demonstrated adaptive testing has reasonable sensitivity (80%) but limited specificity (55%) in classifying participants with impaired and unimpaired abilities. Subsequently, we reduced the number of subtests through factor analysis. We showed that the subtests using Radial Frequency Patterns as stimuli were redundant and could be combined in one subtest. We conclude that L-POST can be shortened to 26 items (7–14 min) and an adaptive item selection procedure could prove particularly useful for screening purposes. Public Significance Statement: Tests for visual problems after brain injury are time-consuming and therefore not often used. In the current research study, we have used sophisticated statistical analyses to shorten an existing test in the best possible way. A shorter test can help remit underdiagnoses and enable access to appropriate treatment. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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