Reports on two studies on the acquisition by children of the voicing contrast in Mexican Spanish word-initial stops. The first was a longitudinal study. One analysis showed children unable to distinguish between voiced-voiceless stop cognate pairs at age 3;10. A spirantization analysis, however, more clearly revealed the children's phonological…

This paper examines the acquisition of English fricatives and is a preliminary report on one aspect of the Child Phonology Project at Stanford University. A characterization of English fricatives is presented, followed by a summary of current information on their acquisition. Three sample hypotheses from the Stanford project are discussed in…

Analysis of longitudinal data from four Mexican-American children to explore two aspects of the acquisition of Spanish word stress indicates that children approach such learning unbiased toward any particular stress type. Children's attention to phonetic or semantic aspects of normatively unstressed syllables leads them to shift stress to that…

Reports on a longitudinal study of the acquisition of the voicing contrast in American English word-initial stop consonants as measured by voice-onset time. The rate and nature of the developmental process are discussed in relation to two competing models of phonological acquisition and two hypotheses regarding the skills being learned. (Author/AM)

Part one of this study discussed the characteristics of errors involving single fricative consonants made by English children learning their first language. Here, the second part discusses the distinctive features of the single fricatives most commonly mispronounced, as well as the characteristics of errors with clustered fricatives. (34…

A distinction is made between the acquisition of phonetics and of phonology. Their interaction and the ways in which they interfere with each other are discussed. Data on the acquisition of English fricatives for several children are given, and are analyzed separately for the phonological and phonetic aspects of acquisition. (Author/CLK)

A study was conducted of the development of consonant clusters in the phonology of a native English-speaking child. His progress was studied over a year and a half period, in three one-month segments. His speech was recorded by tape and transcribed. Techniques used to elicit consonant clusters included real word imitation, imitation of nonsense…

Distinctive feature specification and representation in phonological acquisition are examined in 30 children in the context of underspecification theory. Three questions were addressed: which features do children use to categorize segmental information; do the defining features of a category shift as the phonological system advances; and which…

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,…

Reports a study determining whether significant differences in formant frequency are apparent when chronological age is compared with a measure of physiological age for children during the first six years. (TO)

Fourteen two-year-olds were presented with minimal word pairs in a new and efficient experimental perception paradigm. Data provide a view of relative difficulty of various minimal phonological contrasts for children. (CHK)

Luo-speaking children in Kenya responded to a test using nonce forms in morphophonology. Morphophonological processes in the acquisition of Luo plurals and possessives presented different degrees of difficulty for the subjects, with the type of morphophonological alteration in a language likely to affect the rate and order of acquisition.…

Patterns which partly resemble the proposed "fronting,""voicing," and "stopping" tendencies exist to a statistically significant degree in David Olmsted's large sample of child speech. Instead of the "voicing" pattern that has been suggested, however, voiced stops seem to be favored word-initially, but voiced fricatives are favored word-finally.…

Fricatives and affricates in different word positions and initial fricative clusters were elicited from three linguistically deviant children (ages five years, two months to seven years) and one normal child (age two years, nine months) by means of pictures depicting familiar objects. Data from two of the older children and the normal child are…