Studies assessing domains pertaining to structural language in autism vary in reporting practices and approaches to assessment: A systematic review.
Teresa Girolamo, Lue Shen, Amalia Monroe Gulick and 2 others
PMID 38145307WHAT IT FOUND
Research on language in autism is too inconsistent to guide practice.
Studies use different definitions and tests, so findings cannot be compared. Clinicians should not assume a single assessment result reflects a patient's full language profile.
Key findings
01No study in the review received high-quality ratings across all reporting criteria, indicating that the approach to characterizing language in autism has been piecemeal and incomplete.
02Studies varied widely in how they defined language impairment and autism subgroups, with 10 different definitions for language impairment alone, limiting the ability to compare results across studies.
03Few studies reported measures of speech sound production (21%) or specific information on grammar (32%), despite these being key components of structural language.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
The search was limited to English-language studies using norm-referenced assessments, excluding experimental measures and non-English variants. The review could not evaluate the clinical validity of the assessments used, only how they were reported. Participants were not unique across studies, as some samples overlapped. The review focused on reporting quality, not the effectiveness of interventions or the true prevalence of language disorders.
Declared interests
The authors declared no potential conflicts of interest.
The easy way to misread this
Do not interpret this review as showing that language profiles in autism are uniform or that specific tests are invalid. The finding is that research reporting is inconsistent, which limits generalizability. This does not mean that multi-domain assessment is unnecessary in clinical practice; rather, it underscores that research data cannot be taken as a simple guide to individual patient needs.