Very sharp discrimination functions for the timing of voice onset relative to stop release characterize perceptual boundaries between certain pairs of stop consonants for adult speakers of many languages. To explore how these discriminations depend on experience, their development was studied among Kikuyu children, whose native language contains…

This is one of a series of reports intended to make the results of research available and to serve as progress reports. The following abstracts are included: (1) "Learning the Phonetic Cues to the Voiced-Voiceless Distinction: Preliminary Study of Four American English Speaking Children," Mel Greenlee; (2) "Learning the Phonetic Cues to the…

Theoretical considerations of phoneme construction were explored and a study was made of phoneme efficiency for deaf communication in Finland which utilized 128 deaf pupils (77 boys and 51 girls from grades 3 to 8 and from ages 8 to 15). The main factors of defective production were found in visual reception. It was concluded that, on the average,…

Assuming that a child uses a "reduced version" of the adult phonological system, as opposed to an "imperfect" version, a phonological analysis of a five-year-old child's language is conducted. Research procedures are thoroughly described; tables and diagrams are included. (DD)

This study is a detailed analysis of the phonological development of Sylvia, a bilingual child, in her acquisition of American English and Brazilian Portuguese from the age of 1 year, 7 months to 3 years, 8 months. The study is divided into four stages: ages 1.7 - 1.9; 1.9 - 2.1; 2.1 - 2.3; and 2.3 - 2.8. Up to the age of 1.9, the same…

As one of a regular series, this report focuses on the status and progress of studies on the nature of speech, instrumentation for its investigation, and practical applications. Drawn from the period of July 1 to December 31, 1981, the 15 manuscripts cover the following topics: (1) phonetic trading relations and context effects; (2) temporal…

To determine the accuracy with which the 47-item Predictive Screening Test of Articulation (PSTA) is able to identify first grade children who will master their articulation errors without speech therapy by the time they enter third grade, two groups of children were studied who were deficient enough in speech to be enrolled in therapy, but had no…

This paper focuses on British English. Such rules as might be devised for specification of segment length would have to take into account, among other factors, the lenis/fortis nature of the segments at syllable margins, degree of stress, the relation between a given syllable and others in the same rhythm group, the same relations within the word,…

This longitudinal study attempts to (1) describe the development of articulation of consonant phonemes through the 4th grade, and (2) explore the relation between articulation and non-articulation variables. Between the spring before kindergarten entrance and the 4th grade, 436 subjects were tested 11 times at 6-month intervals. On the basis of…

This publication reports on research which has investigated phoneme acquisition and carry-over in a programmatic fashion. This research began with investigations of the effect of an extension of stimulus control of new phoneme responses through a systematic operant procedure. After quantifying the effect of such procedures in terms of stimulus…

The sound system of English is described in all its complexity, from the relationship between spelling and pronunciation to the rules of connected speech, focusing on the methods and rationale of teaching pronunciation of English, particularly to English as a second language learners. (CB)