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Sentence Repetition as a Diagnostic Tool for Developmental Language Disorder: A Systematic Review and Meta-Analysis.

Leah Ward¹, Kamila Polišenská^1,2, Colin Bannard³

¹Division of Psychology, Communication and Human Neuroscience, The University of Manchester, United Kingdom.

Journal of Speech, Language, and Hearing Research : JSLHR

|May 24, 2024

Summary

Sentence repetition (SR) tasks effectively differentiate children with developmental language disorder (DLD) from typically developing (TD) peers. This study confirms SR's diagnostic utility across various methods and languages.

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Area of Science:

Linguistics
Developmental Psychology
Clinical Research

Background:

Developmental Language Disorder (DLD) affects language acquisition in children.
Sentence Repetition (SR) tasks are commonly used to assess language skills.
Variability in SR task administration may impact diagnostic accuracy.

Purpose of the Study:

To systematically review and meta-analyze the accuracy of SR tasks in identifying DLD in children.
To explore how variations in SR task administration and scoring influence diagnostic outcomes.
To determine if SR task heterogeneity explains discrepancies in reported DLD detection rates.

Main Methods:

Systematic review of four databases for studies on SR tasks in children with DLD and TD children.
Inclusion of 66 studies after screening 3,459 articles.
Multilevel meta-analysis of 46 studies with preregistered subgroup analyses to investigate heterogeneity.

Main Results:

Significant methodological variation observed across 19 languages, 39 SR tasks, and scoring methods.
TD children outperformed children with DLD by an average of 2.08 SDs on SR tasks.
Effect size heterogeneity was primarily explained by matching methods and task language.

Conclusions:

SR tasks demonstrate robust ability to distinguish children with DLD from TD children.
The diagnostic utility of SR tasks is largely unaffected by most task and study variations.
SR tasks remain a valuable tool for identifying DLD in clinical and research settings.