Abstract
Child and family risk factors of Specific Language Impairment (SLI), including delayed mastery of early language milestones and family history of language impairment, have been found to affect more SLI children than typically developing (TD) children. However, little to no research has examined whether prevalence differs between monolingual and early second language (eL2) learners. Furthermore, the degree of misdiagnosis in clinical settings is unknown as well as whether monolingual and eL2 children differ in the proportion of over- and underdiagnosis. The present study compared both language groups regarding the prevalence of risk factors and (mis)diagnosis as SLI. The sample included 92 monolingual (69 TD, 23 SLI) and 74 eL2 children (55 TD, 19 SLI), aged 5–8 years, and their parents. Prevalence of child/family risk factors was assessed via parental questionnaire; misdiagnosis was calculated by comparing children’s identification as (non)SLI via a standardized test with their clinical diagnosis. Except for dyslexia/dysgraphia, the rate of child and family risk factors was the same in both language groups, correctly identifying up to half of the SLI children. Correlation analyses between SLI-identification and clinical diagnosis indicated a moderate positive association. The rates of misdiagnosis in monolingual and eL2 children varied, with underdiagnosis being more frequent than overdiagnosis across groups. Moreover, the rate of overdiagnosis was marginally higher for eL2 children than for monolinguals. Summarizing, correct clinical diagnosis as SLI is difficult in both monolinguals and in eL2 learners; a correct diagnosis as unimpaired is especially challenging in eL2 children. Our results suggest that complementing standardized language assessments with parental information helps to reduce the rate of misdiagnosis in both types of learners.
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Notes
Note that throughout this paper the term ‘diagnosis’ is used to refer to the procedure of clinically assessing a child’s language status as SLI or as TD, and is not restricted to the diagnosis of a disorder.
The Project MILA (The role of migration background and language impairment in children’s language achievement; PI: P. Schulz) is part of the Research Centre IDeA. For more information, see Grimm and Schulz (2012) and www.idea-frankfurt.eu. The design of the project is approved by the ethics committee of the German Psychological Association (DGPs).
In the monolingual-SLI group, 15 children scored below T = 40 in two subscales, six in three subscales, one in four subscales and one in six subscales. In the eL2-SLI group, six children scored below T = 40 in two subscales, seven in three subscales, one in four subscales, two in five subscales, two in six subscales, and one child in seven subscales of LiSe-DaZ.
Recall that here diagnosis is not used in the medical sense of diagnosing a disorder, but simply as a result of a diagnostic procedure.
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Acknowledgments
The research presented here is part of the project MILA and was carried out at the Research Center IDEA, funded by the LOEWE program for excellency from the State of Hesse. We thank Magda Wojtecka and Rabea Schwarze for their help with data collection and analysis, and Judith Dirk and Wolfgang Woerner for statistical support. We also acknowledge the help of the research assistants. We are grateful to the children, their parents and the teachers in kindergartens and in special needs centers for their participation in the study. We thank the two anonymous reviewers for their helpful comments on previous versions of the paper.
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Grimm, A., Schulz, P. Specific Language Impairment and Early Second Language Acquisition: The Risk of Over- and Underdiagnosis. Child Ind Res 7, 821–841 (2014). https://doi.org/10.1007/s12187-013-9230-6
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DOI: https://doi.org/10.1007/s12187-013-9230-6