Michelle Hernandez, Juliana Ronderos, Anny Patricia Castilla-Earls
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Diagnostic Accuracy of Grammaticality and Utterance Length in Bilingual Children.
Purpose: The purpose of this study was to investigate the diagnostic accuracy of two measures derived from spontaneous language samples, mean length of utterance in words (MLUw) and percentage of grammatical utterances (PGU), in identifying developmental language disorder (DLD) in Spanish-English bilingual children. We examined two approaches: best language and total language.
Method: The participants in this study included 74 Spanish-English bilingual children with (n = 36) and without (n = 38) DLD. Language samples were elicited through a story retell and story generation task using Frog wordless picture books in English and Spanish. Stories were transcribed and coded using the Systematic Analysis of Language Samples (Miller & Iglesias, 2020) to extract MLUw and PGU in both languages.
Results: Logistic regression analyses suggested that a model that included PGU, MLUw, and age achieved the best diagnostic accuracy in predicting group membership. Both approaches, best language and total language, had fair diagnostic accuracy.
Conclusions: In combination, PGU and MLUw seem to be useful diagnostic tools to differentiate bilingual children with and without DLD. Clinical implications and usability are discussed.
期刊介绍:
Mission: LSHSS publishes peer-reviewed research and other scholarly articles pertaining to the practice of audiology and speech-language pathology in the schools, focusing on children and adolescents. The journal is an international outlet for clinical research and is designed to promote development and analysis of approaches concerning the delivery of services to the school-aged population. LSHSS seeks to advance evidence-based practice by disseminating the results of new studies as well as providing a forum for critical reviews and meta-analyses of previously published work.
Scope: The broad field of audiology and speech-language pathology as practiced in schools, including aural rehabilitation; augmentative and alternative communication; childhood apraxia of speech; classroom acoustics; cognitive impairment; craniofacial disorders; fluency disorders; hearing-assistive technology; language disorders; literacy disorders including reading, writing, and spelling; motor speech disorders; speech sound disorders; swallowing, dysphagia, and feeding disorders; voice disorders.