Abstract
Early assessment of phonetic and phonological development requires knowledge of typical versus atypical speech patterns, as well as the range of individual developmental trajectories. The nature of data reporting in previous literature on typical voicing acquisition left aspects of the developmental process unclear and limited clinical applicability. This work extends a previous four-month group study to present data for one child over 12 months. Words containing initial /b p d t/ were elicited from a monolingual English-speaking 2-year-old child biweekly for 25 sessions. Voice onset time (VOT) was measured for each stop. For each consonant and recording session, we measured range as well as accuracy, overshoot and discreteness calculated for means and individual tokens. The results underscore the value of token-by-token analyses. They further reveal that typical development may involve an extended period of fluctuating voicing patterns, suggesting that the voiced/voiceless contrast may take months or years to stabilise. 2015
| Original language | English |
|---|---|
| Pages (from-to) | 955-976 |
| Number of pages | 22 |
| Journal | Clinical Linguistics and Phonetics |
| Volume | 29 |
| Issue number | 12 |
| DOIs | |
| State | Published - 2 Dec 2015 |
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Keywords
- Assessment
- English
- speech development
- voice onset time
- voicing
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Longitudinal observations of typical English voicing acquisition in a 2-year-old child : Stability of the contrast and considerations for clinical assessment. / Hitchcock, Elaine; Koenig, Laura L.
In: Clinical Linguistics and Phonetics, Vol. 29, No. 12, 02.12.2015, p. 955-976.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - Longitudinal observations of typical English voicing acquisition in a 2-year-old child
T2 - Stability of the contrast and considerations for clinical assessment
AU - Hitchcock, Elaine
AU - Koenig, Laura L.
PY - 2015/12/2
Y1 - 2015/12/2
N2 - Early assessment of phonetic and phonological development requires knowledge of typical versus atypical speech patterns, as well as the range of individual developmental trajectories. The nature of data reporting in previous literature on typical voicing acquisition left aspects of the developmental process unclear and limited clinical applicability. This work extends a previous four-month group study to present data for one child over 12 months. Words containing initial /b p d t/ were elicited from a monolingual English-speaking 2-year-old child biweekly for 25 sessions. Voice onset time (VOT) was measured for each stop. For each consonant and recording session, we measured range as well as accuracy, overshoot and discreteness calculated for means and individual tokens. The results underscore the value of token-by-token analyses. They further reveal that typical development may involve an extended period of fluctuating voicing patterns, suggesting that the voiced/voiceless contrast may take months or years to stabilise. 2015
AB - Early assessment of phonetic and phonological development requires knowledge of typical versus atypical speech patterns, as well as the range of individual developmental trajectories. The nature of data reporting in previous literature on typical voicing acquisition left aspects of the developmental process unclear and limited clinical applicability. This work extends a previous four-month group study to present data for one child over 12 months. Words containing initial /b p d t/ were elicited from a monolingual English-speaking 2-year-old child biweekly for 25 sessions. Voice onset time (VOT) was measured for each stop. For each consonant and recording session, we measured range as well as accuracy, overshoot and discreteness calculated for means and individual tokens. The results underscore the value of token-by-token analyses. They further reveal that typical development may involve an extended period of fluctuating voicing patterns, suggesting that the voiced/voiceless contrast may take months or years to stabilise. 2015
KW - Assessment
KW - English
KW - speech development
KW - voice onset time
KW - voicing
UR - http://www.scopus.com/inward/record.url?scp=84949108356&partnerID=8YFLogxK
U2 - 10.3109/02699206.2015.1083617
DO - 10.3109/02699206.2015.1083617
M3 - Article
VL - 29
SP - 955
EP - 976
JO - Clinical Linguistics and Phonetics
JF - Clinical Linguistics and Phonetics
SN - 0269-9206
IS - 12
ER -