Examines phonetic variation in multisyllable babbling of infants from 7 to 11 months of age. The investigation was to verify assumptions that, in infant vocal development, there is a systematic increase in the phonetic variation of these babbles, and separate stages of repetitive and nonrepetitive babbling are posited. (22 references) (GLR)

The prevailing view of phonological development is that changes in pronunciation are driven by phonological changes. This view (it is argued here) derives from the particular form of the data that has most often been used in studies of phonological development, namely broad phonetic transcriptions. Transcribing an earlier pronunciation with one…

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)

A study of the utterances of young children, aged 7 to 22 months, is described. These utterances, varying in length from one to 17 syllables, contain only suprasegmental information because the verbal content was incomprehensible to hearers who were not acquainted with the child and the situation in which the utterances occured. In the corpus,…

Vocal samples were collected from a child with cri du chat syndrome from the age of 8 to 26 months. Analyses indicated that the high vocal fundamental was characteristic of comfort state vocalizations of the child. There was a predominance of falling intonation contours and limited interutterance variation of fundamental frequency, and phonetic…

The purpose of study was to investigate the impact of pre-surgical Infant Orthopaedics (IO) on consonant production at 18 months of age in children with Unilateral Cleft Lip and Palate (UCLP) and to compare the consonant production to that of age-matched children without clefts. The first ten children in a consecutive series of 20 with UCLP…

This panel discussion seeks to determine the role of babbling and of nonlinguistic behavior in language acquisition. A central question is whether there is a continuity between babbling and speech. The paper presents the views that: the infant's ability to assimilate and adapt to his environment antedates the maturation of his visual and auditory…

This investigation studied (1) the acquisition and proportion of correct usage of consonants of Japanese and American children, (2) the consonant substitutions of children developing normal language and of children with articulation problems, and (3) confusion in adults' recall of consonants. A system of distinctive features (gravity, diffuseness,…

Conversational speech samples from 33 two-year-olds were analyzed to determine word and syllable shapes produced, inventories of initial and final consonantal phones, and percentage of consonants correct. A profile of the normally developing two-year-old's range of sounds and structures is presented to aid assessment of young children with…

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 first part of this bibliography contains annotations of articles on the acquisition of voice onset time (VOT) as the marker of a phonological contrast, that is, the studies concern children who are already developing a phonological system. The most common questions are the following: (1) When children begin to produce initial stops, how are…

The study reports quasilongitudinal data on 10 children at 2:0 and 2:5, and another 10 children at 2:9 and 3:3. The analysis included word-initial and word-final phonetic inventories of consonant singletons and clusters and a summary of the relative frequency of seven word shapes. (Author/JDD)

Production data from a longitudinal study of seven children in their first attempts to produce words containing fricatives are presented to illustrate how children use four distinct strategies to approach this relatively difficult class of sounds. The strategies are: (1) favorite sounds--an approach used by a subject who seemed to enjoy playing…

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…

An interactionist-discovery theory of child phonology is proposed based on the following tenets: children invent their own phonological rules, and phonetic mastery is not automatically or generally in step with learning about phonemic contrasts. When a child learns the sound pattern of a language, there is constant interaction between the…