Selected aspects of early phonological development are described, and eight important characteristics are suggested. It is held that the child plays a highly active, creative role in the acquisition process. The child's early vocables constitute a connecting link between babbling and adult-modeled speech; the child's phonological systems for…

A study was conducted to determine whether the child expresses linguistic knowledge during the single-word period. The order of mention in 65 sets of successive single-word utterances from five children at Stage 1, two to four years old, were analyzed. To elicit speech, the children were shown line drawings representing such situations as animate…

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 research reported here was carried out to help establish the normal course of fricative acquisition as a basis for comparisons with abnormal development. Three questions concerning phonological processes were investigated as part of a larger study of fricative acquisition: (1) the phonological processes that underlie children's fricative…

This paper reports the results of a preliminary study dealing with the ways in which children between ages 6 and 7 organize spoken language. In particular, aspects of the temporal and segmental structure of polysyllabic English words containing the syllable C/jul/, as in the word "pediculous," are dealt with. This study is based on the assumption…

This paper reports on a longitudinal study of the acquisition of the voicing contrast in American-English work-initial stop consonants, as revealed through instrumental analysis of voice onset time characteristics. Four monolingual children were recorded at approximately two week intervals, beginning when the children were about 1;6. Data provide…

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…

This is a longitudinal study of a child's acquisition of Mandarin phonology between the ages of 1;2 and 2;8. During this period, the child was much less verbal than many children reported in other child phonology studies. The study consists of two parts. The first part is a description of the child's "proto-language," in which he used…

This investigation studied the performance of fifteen normal and fifteen language-disabled children on experimental pragmatic tasks and on a standardized Piagetian measure of sensorimotor intelligence. The children were matched for mean length of utterance, all subjects performing at the holophrastic level. A series of experimental measures was…

This study proposes that children's phonological behavior at Stage VI of sensorimotor development may show markedly decreased variability compared to children at Stage V. According to Piaget, sensorimotor development during Stage VI is distinguished from preceding stages by the onset of representational ability and ability to form mental…

Since speech pathologists are interested in the role nonfluent behavior may play in the onset or development of stuttering, this study compared the linguistic behavior of 17 fluent four-year-old children to that of 17 nonfluent children similar in age, intelligence, sex, sibling status, race, socioeconomic status, and education. The aspects of…

It is proposed that in studying the development of children's speech, the findings in the data are heavily influenced by what is expected to be found on the basis of our theoretical preconceptions. This phenomenon is actually more widespread than has previously been acknowledged, and our expectations about how children learn language may have to…

Work with verbal autistic children has demonstrated phonological, syntactic, and semantic production defects which are not understandable solely in terms of a developmental lag, but also suggest aspects of atypical linguistic development. This investigation is a preliminary attempt to test not only the production, but also the perception, of…

Several studies have begun to investigate the claim that children can make most phonological discriminations when they begin to speak. This paper investigates how well children aged 2;3 to 2;11 can discriminate between pairs of minimally different real words, and it shows that the results are affected by how well the children know the words. It is…

This paper proposes a broad outline of a variable model of language development and explores several particulars of such a model in the language behavior of four two-year-old children. The process by which information about language is progressively transformed and integrated rather than merely being added together can be seen in the shifting…