A detailed analysis of a six-month period in a child's acquisition of phonetic and phonological capacities indicates that the apparent plateau of the second year is a site of intensive language learning, which is not reflected in the growth of vocabulary or mean length of utterance. (Author/EJS)

Data are presented from one subject (J) that show a gradual development of the complexity of words in terms of syllable structure and degree of phonetic similarity of co-occurring consonants. During the age range of 1;9 to 2;6, J's data show a highly systematic progression of stages, each characterized by fewer restrictions on the number, order,…

The data in this study are taken from an on-going research project investigating the development of the production of intervocalic consonants in Mexican Spanish. The total project includes both longitudinal and cross-sectional studies of forty children and uses both naturalistic observation and experimental methods. The data discussed here is from…

Toddlers in the lowest 10th percentile for lexical production were compared with age- and language-matched controls on measures of phonetic complexity, lexical development, and grammatical complexity. Results indicate an overlap between phonology, lexicon, and grammar and suggest the importance of true consonant production for lexical development.…