This paper analyzes Piagetian theory on the relative development of cognition and language, the local homology model which claims there are specific language-cognition relationships at specific points in time, normal development and local homology, and development in language-impaired children. Implications for clinical decision making are…

Twenty-seven toddlers identified as showing specific expressive language delay (ELD) were studied and followed through the preschool period. Findings indicated that home-based intervention accelerated vocabulary skills, but did not decrease the likelihood of later phonological problems. ELD was also seen as a self-correcting condition. (PB)