Examination of the ADOS-2 Expressive Language Score in Fragile X Syndrome.
Heather Fielding-Gebhardt, Shelley L Bredin-Oja, Steven F Warren
PMID 33910237WHAT IT FOUND
The ADOS-2 Expressive Language Score tracks expressive language in adolescents with Fragile X Syndrome, correlating strongly with parent reports and direct tests.
It does not reflect anxiety or rule-breaking behaviors, making it a useful quick proxy for language ability when comprehensive testing is not possible.
Key findings
01The Expressive Language Score was strongly and significantly correlated with parent-reported expressive language, direct assessment of expressive vocabulary, and naturalistic measures of language complexity and vocabulary.
02The Expressive Language Score was not significantly associated with chronological age, anxiety, or rule-breaking behaviors, indicating it measures language rather than non-linguistic constructs.
03The score may serve as an efficient proxy for expressive syntax and vocabulary when no other language measures are available or time constraints prohibit comprehensive assessment.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
The sample was a convenience sample from an ongoing longitudinal study, which may limit generalizability. Several participants did not complete all measures due to challenging behaviors or limited language skills, leading to varying sample sizes across tests. The ELS may lack sensitivity to small changes in language ability, making it unsuitable for monitoring short-term intervention outcomes. Validity is dependent on the ADOS-2 module administered, which may restrict its utility in individuals with very limited language.
Declared interests
The research was supported by the National Institutes of Health (N.I.H., Extramural). No other conflicts of interest were reported in the provided text.
The easy way to misread this
Do not use the ADOS-2 Expressive Language Score to track progress over time or to evaluate the effectiveness of specific language interventions. The authors note it may lack sensitivity to small changes in ability, so it is best used as a snapshot of current language level rather than a dynamic measure of change.