This study investigated the relation between lexical development and the production of prosodic prominence in disyllabic babble and words. Monthly recordings from nine typically developing Belgian-Dutch-speaking infants were analyzed from the onset of babbling until a cumulative vocabulary of 200 words was reached. The differentiation between the…

The phonetic characteristics of canonical babbling produced by Korean- and English-learning infants were compared with consonant and vowel frequencies observed in infant-directed speech produced by Korean- and English-speaking mothers. For infant output, babbling samples from six Korean-learning infants were compared with an existing English…

The early development of vocalic and consonantal production in Mandarin-learning infants was studied at the transition from babbling to producing first words. Spontaneous vocalizations were recorded for 24 infants grouped by age: G1 (0 ; 7 to 1 ; 0) and G2 (1 ; 1 to 1 ; 6). Additionally, the infant-directed speech of 24 caregivers was recorded…

A study of the phonetic changes occurring when a speaker attempts to revise an unclear word for a listener focuses on changes made in the sound segment duration to maximize differences between phonemes. In the study, five-year-olds were asked by adults to revise words differing in voicing of initial and final stop consonants; a control group of…

Examines the phonetic patterns and linguistic development of an infant who was tracheostomized during the period that infants normally begin to produce syllabic vocalization. It was found that the infant had developed only a tenth of the canonical syllables expected in normally developing infants, a small inventory of consonant-like segments, and…

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,…

Examines whether systematic differences exist in babbling and first words of infants from different language backgrounds (English, French, Japanese and Swedish) and asks whether differences result from the phonetic structure of the languages. Statistically significant differences discerned in the babbling phonetic selection indicates that phonetic…

Analysis of longitudinal data on the phonetic development of Swedish infants (N=4) from 1 through 17 months of age showed five distinct stages in early vocalization development: glottal; velar/uvular; vocalic; reduplicated consonant babbling; and variegated consonant babbling. Comparison with infants of differing linguistic backgrounds indicated…

The magnitudes and patterns of two-point difference limens (DL) of the tongue were studied in children with and without articulation errors. Many children with misarticulation of /r/ had DLs that differed in magnitude and pattern from those of children with normal articulation and those with misarticulations of /s/. (NCR)

Examines the relationship between phonetic substitution patterns in child speech and sound change patterns in dialects of adult language, basing an explanation of these phenomena on acoustic data and language universals. (AM)

Mongoloid children appear to be useful candidates for studying difficult methodological problems found in developmental research. They represent a subpopulation in which general development is markedly slower than in the normal child and in which language development appears to be more dependent on age than general intellectual development. This…

The pronunciations of children do not merely represent accidental misses with respect to adult pronunciation. Children employ substitutions and deletions in highly systematic ways; child pronunciations reflect a set of simplification strategies. The major common processes of both normal and abnormal child phonology result in simplification of…

This book reports the proceedings of the conference on the role of speech in language, the fifth conference in the "Communicating by Language" Series, sponsored by the Growth and Development Branch of the National Institute of Child Health and Human Development. The focus of the first group of papers is on the development of speech in man and…

Phonetic and phonological analysis of spontaneous speech of six 2-year-old monolingual Puerto Rican Spanish-learning children revealed several sound usage patterns similar to those found in English and other language-learning children, supporting the claim that certain universal patterns exist in phonological development. (Author/CB)

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…