This paper, based on Rosenbaum's (1967) grammar of adult English, attempts to apply ideas of deep structure and transformations to child grammar. The main rules predicated include phrase structure rules, segment structure rules, contextual features, and transformational rules. In this approach, the role of transformations is to segment and place…

This study begins with a discussion of what a phonological rule is, and how the term has been used in previous investigations. The relation between the child's phonological system and the adult's system, the relationship between discrimination and production, and the viability of positing underlying forms for children's words are also discussed.…