TY - JOUR
T1 - The ethologic model of phonetic development
T2 - II. The closant curve
AU - Robb, Michael P.
AU - Bauer, Harold R.
N1 - Funding Information:
We extend our appreciation to E. Hirohata, L. Imamura and S. Schanz who assisted with data analysis and transcription reliability. This research was supported, in part, by SEED grants from the University of Hawaii and Ohio State University to each author, respectively.
PY - 1991
Y1 - 1991
N2 - The ratio of closants-to-vocants (C: V), a phonetic diversity estimator proposed by the ethologic model of phonetic development, was examined to test the 'closant curve' hypothesis (Bauer, 1988). The closant curve reflects a regular increase in the ratio of consonants (closants) to vowels (vocants) in early vocal and speech productions of young children. C:V ratios were plotted for seven children's monthly vocalizations covering the period of 8 to 25 months of life. The results revealed a closant curve developmental function, reflecting a systematic increase in closant use according to chronological age. The hypothesis was further tested and validated in the vocalizations of a cross-sectional sample of 21 children. The findings support the closant curve hypothesis and the application of an ethologic model to evaluate early phonetic development.
AB - The ratio of closants-to-vocants (C: V), a phonetic diversity estimator proposed by the ethologic model of phonetic development, was examined to test the 'closant curve' hypothesis (Bauer, 1988). The closant curve reflects a regular increase in the ratio of consonants (closants) to vowels (vocants) in early vocal and speech productions of young children. C:V ratios were plotted for seven children's monthly vocalizations covering the period of 8 to 25 months of life. The results revealed a closant curve developmental function, reflecting a systematic increase in closant use according to chronological age. The hypothesis was further tested and validated in the vocalizations of a cross-sectional sample of 21 children. The findings support the closant curve hypothesis and the application of an ethologic model to evaluate early phonetic development.
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U2 - 10.3109/02699209108985901
DO - 10.3109/02699209108985901
M3 - Article
AN - SCOPUS:0026058583
SN - 0269-9206
VL - 5
SP - 339
EP - 353
JO - Clinical Linguistics and Phonetics
JF - Clinical Linguistics and Phonetics
IS - 4
ER -