Applying Item Response Theory to the Development of a Screening Adaptation of the Goldman-Fristoe Test of Articulation-Second Edition.

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Journal of speech, language, and hearing research : JSLHR, ISSN: 1558-9102, Vol: 60, Issue: 9, Page: 2672-2679

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Brackenbury, Tim; Zickar, Michael J; Munson, Benjamin; Storkel, Holly L
American Speech Language Hearing Association
Arts and Humanities; Social Sciences; Health Professions
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article description
Item response theory (IRT) is a psychometric approach to measurement that uses latent trait abilities (e.g., speech sound production skills) to model performance on individual items that vary by difficulty and discrimination. An IRT analysis was applied to preschoolers' productions of the words on the Goldman-Fristoe Test of Articulation-Second Edition (GFTA-2) to identify candidates for a screening measure of speech sound production skills.