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.…

Examination of the phonological acquisition of a young girl whose parents spoke two Cantonese dialects indicated that she acquired neither parents' dialect, supporting the claim that children use all available input in acquiring language rather than limiting themselves to a primary language model. (Author/CB)

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)

Research with 24 infants revealed that reduplication is a general pattern during the earliest stages of phonological development, used most frequently by children who follow a multisyllabic rather than monosyllabic course of development. (Author)

Attempts to measure phonological acquisition have largely focused on segments, with less effort made to examine whole-word productions. This article proposes four measures designed to estimate a child's whole-word abilities: 1. the "phonological mean length of utterance", a measure of whole-word complexity for both child and target words, 2. the…