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- Creators: Gray, Shelley
Description
Identification of primary language impairment (PLI) in sequential bilingual children is challenging because of the interaction between PLI and second language (L2) proficiency. An important step in improving the accurate diagnosis of PLI in bilingual children is to investigate how differences in L2 performance are affected by a length of L2 exposure and how L2 assessment contributes to differentiation between children with and without PLI at different L2 proficiency levels. Sixty one children with typical language development (TD) ages 5;3-8 years and 12 children with PLI ages 5;5-7;8 years participated. Results revealed that bilingual children with and without PLI, who had between 1 and 3 years of L2 exposure, did not differ in mean length of utterance (MLU), number of different words, percent of maze words, and performance on expressive and receptive grammatical tasks in L2. Performance on a grammaticality judgment task by children with and without PLI demonstrated the largest effect size, indicating that it may potentially contribute to identification of PLI in bilingual populations. In addition, children with PLI did not demonstrate any association between the length of exposure and L2 proficiency, suggesting that they do not develop their L2 proficiency in relation to length of exposure in the same manner as children with TD. Results also indicated that comprehension of grammatical structures and expressive grammatical task in L2 may contribute to differentiation between the language ability groups at the low and intermediate-high proficiency levels. The discriminant analysis with the entire sample of bilingual children with and without PLI revealed that among L2 measures, only MLU contributed to the discrimination between the language ability groups. However, poor classification accuracy suggested that MLU alone is not a sufficient predictor of PLI. There were significant differences among L2 proficiency levels in children with TD in MLU, number of different words, and performance on the expressive and receptive grammatical tasks in L2, indicating that L2 proficiency level may potentially impact the differentiation between language difficulties due to typical L2 acquisition processes and PLI.
ContributorsSmyk, Ekaterina (Author) / Restrepo, Maria Adelaida (Thesis advisor) / Gorin, Joanna (Committee member) / Gray, Shelley (Committee member) / Arizona State University (Publisher)
Created2012
Description
Currently, there are few quality tools available to screen for developmental language disorder (DLD) in Spanish-speaking children despite the continued increase of this population in the United States. The lack of valid and reliable screening tools may be a factor leading to difficulties with the identification of and delivery of services to these children. This study plans to improve upon the screening of Spanish-English bilingual children.The Spanish Screener for Language Impairment in Children (SSLIC) tests Spanish oral language skills in Spanish-speaking children. It measures language skills through morphology elicitation of Spanish clitics, prepositions, derivational morphemes, subjunctive verb tenses, and articles and repetition of nonwords and sentences, which have all been shown to be affected in Spanish-speaking children with DLD.
The purpose of the study is to provide preliminary validity evidence of the SSLIC. Children's results on the SSLIC were compared to other validated measures. Fourteen Spanish-English bilingual students were recruited: 11 children with typical language development (TD) and 3 with DLD. The Bilingual English-Spanish Assessment and the Dynamic Measure of Oral Narrative Discourse were used to establish preliminary validity evidence. Pearson correlations were run to determine if SSLIC scores correlated with other validated measures. Significant correlations were found between the SSLIC’s scores and scores on the BESA. One-way analysis of variance (ANOVA) was used to determine mean differences between groups. No significant mean differences for SSLIC scores were found between children with typical and atypical language. Yet, effect sizes suggested group differences. Point to point analysis revealed that the SSLIC has excellent inter-rater reliability.
Despite a small sample size, this study serves as preliminary evidence that the SSLIC is both valid and reliable and supports that the SSLIC has the potential to be used as a screening tool for DLD for Spanish-speaking kindergarten and 1st grade students with further validation, which should continue.
ContributorsSmith, Brandon Earl (Author) / Restrepo, María A (Thesis advisor) / Gray, Shelley (Committee member) / Brown, Jean C (Committee member) / Moen, Theresa C (Committee member) / Arizona State University (Publisher)
Created2023