Phonological Working Memory and Sentence Production in School-Age Children with Typical Language, Dyslexia, and Comorbid Dyslexia and Developmental Language Disorder.

Nearly one third of the children in the correlation analysis had dyslexia, and they were screened for normal oral language, which may have weakened the expected link between phonological working memory and sentence production. The sentence production task was a structured assessment, not a natural conversation, so it may not capture how children form sentences in everyday communication. The sentence-level comparisons used only matched pairs and only sentences that both children produced without errors, so the analyzed sentence set was small and may not represent all sentences the children could produce. The study did not measure vocabulary, literacy stage, or error patterns, so it cannot show how these factors influence sentence production. Children with developmental language disorder only were omitted because the group had nine children, so findings do not cover that diagnosis. Groups were classified by test scores, and not all children had a clinical diagnosis, so the labels may not match every clinic's diagnostic process.

The authors report no known conflicts of interest. The article is listed as supported by NIH extramural research.

Do not conclude that phonological working memory causes sentence production problems. This was an observational study, and the main correlations were weak. In one matched comparison, children with dyslexia plus developmental language disorder produced shorter, less varied, and less complex sentences even though their phonological working memory scores did not differ from children with dyslexia only.