Six autistic children, age 3-6, and 6 children with Down syndrome were followed over a period of 12-26 months. Autistic children followed the same general developmental path as the Down syndrome children in the acquisition of grammatical and lexical aspects of language. (Author/JDD)

This paper attempts to show the relationship between variable rules and more widely used psycholinguistic constructs such as amalgams and schemas, and to point out how variationists' methods can be useful in the study of language acquisition. The traditional rule, the rule for forming the past tense of regular verbs in English, is discussed as it…

The Avon Longitudinal Study of Parents and Children (ALSPAC) provided descriptive data on the speech and language of 25-month-olds. Findings indicated great range in the stage of expressive language development achieved. Girls showed more advanced skills than boys. A clear pattern was identified in use of sound classes. Child verbal comprehension…