“Three Distinct Classes of Expressive Language Abilities in Down Syndrome: Caregiver Report and Associated Factors”

https://pubmed.ncbi.nlm.nih.gov/38117678

This study reveals three distinct classes of caregiver-reported expressive language abilities in individuals with Down syndrome, with most belonging to higher or middle classes, and identifies factors associated with lower abilities such as female gender, use of sign language, reduced pronunciation, and certain school arrangements.