Researchers frequently examine the development of the single-word lexicon in the absence of phonetic data. Yet a large body of literature demonstrates relationships between the phonetics of babble and early speech, and it is clear that production skill is essential for establishing a lexicon. This study uses longitudinal productivity criteria to establish children's phonetic skill. Twenty children were followed from age 9 to 16 months, and their level of consistency of vocal patterns was examined in relation to their lexical production, providing a relatively large-sample demonstration of phonetic/lexical relationships at the transition to language. Number of specific consonants produced consistently across the months of observation predicted referential lexical use at 16 months, whereas the transition to reference itself signaled the onset of a sharp increase in numbers of different words produced in a session. The earliest referential speakers exhibited prior consistency in the production of [p/b], which also predominated in their words. Prior use of at least two supraglottal consonants characterized the referential group. Children varied in the specific consonants they produced consistently, and these same consonants, varying according to individual child repertoire, characterized nearly all consonant-based words produced by each child in both of the final 2 months of observation. These findings are interpreted in relation to the children's contemporaneous development of representational ability and pragmatic skill.
Taking as a point of departure Locke's biological model for the origins of phonological development, this study encompasses analyses of phonetic tendencies, consonant use in babbling and early words, and phonological word-selection patterns. Data from 10 children aged 9 to 16 months are drawn from four lexically defined points covering the period from no word use to a cumulative vocabulary of 50 words. Individual differences are found to prevail from the start in all three domains analyzed, with some increase in uniformity across subjects with increasing knowledge of language. Furthermore, the phonological processes typical of development from age 1 to 3 or 4 years are found to be rooted in the phonetic tendencies of the prelinguistic period.
Article:Vihman, Marilyn orcid.org/0000-0001-8912-4840 and Croft, William (2007) ReuseItems deposited in White Rose Research Online are protected by copyright, with all rights reserved unless indicated otherwise. They may be downloaded and/or printed for private study, or other acts as permitted by national copyright laws. The publisher or other rights holders may allow further reproduction and re-use of the full text version. This is indicated by the licence information on the White Rose Research Online record for the item. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request.Phonological development: toward a ''radical'' templatic phonology* MARILYN VIHMAN AND WILLIAM CROFT Abstract ''Radical'' templatic phonology is a template-based approach to segmental phonological representation. The central hypothesis is that the segmental phonological structure of words is represented as language-specific phonotactic templates, in the sense used in the developmental literature. Template-based organization of the early lexicon has been identified in children acquiring several di¤erent languages. It is the result of a usage-based abstracting or ''induction'' process based on both babbling practice (phonetic production) and input experience with specific adult phonological patterns. The resulting templates thus constitute patterns that reconcile (or ''adapt'') the model provided by target words with the child's own phonetic repertoire of syllables or word shapes -typically extending or building on the forms initially ''selected'' for first word production, in which adult and child forms show a close match. In adult phonology segment categoriesnatural classes, or features -are best defined in terms of their occurrence in positions in the templates in individual languages, not as independent universal categories. After reviewing the status of segment categories and their phonetic basis in contemporary phonological theory we present crosslinguistic evidence of pervasive variation in both phonetic realization and phonological distribution patterns, evidence that supports the template construct.
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