Preschool language disorders and subsequent language and academic difficulties.

Sixty-three language-disordered children first evaluated in their preschool years were followed four to five years after initial diagnosis. At follow-up approximately 40% of these children continued to present speech and language problems and approximately 40% presented other learning problems. Preschool levels of language comprehension, formulation, semantics, syntax, phonology, and speech production were found to be moderately correlated to subsequent class placement in the elementary grades. Duration of preschool therapy was not related to either the severity of preschool language disorder or to any subsequent speech, language, or academic abilities. Duration of school therapy was related to severity of phonologic deficit as rated during the preschool years and to all follow-up ratings for speech, language, and academic abilities.