Suggests that Goad & Ingram's (1987) argument in favor of a cognitive model of phonological development failed to recognize the uniqueness of each individual's neural and vocal structures, ignored documented variability in the phonetic patterns of prelexical infants, and inexplicably assumed that inter-child variability implied the operation of…

Research on child language acquisition should distinguish between different possible causes of variation and not just attribute variation to individual variation. An alternative analysis using a different methodology can show that children's patterns of acquisition are actually relatively similar. (Author/CB)

Examines questions related to whether children with severe learning disabilities go through the same developmental stages as children without such problems, or whether they develop along different lines. Explores the "delay" versus "deviance" issue in relation to linguistic development in children with Down's syndrome. Looks…