Journal article
A longitudinal study of infants’ early speech production and later letter identification
PloS one, Vol.13(10), pp.e0204006-e0204006
2018
DOI: 10.1371/journal.pone.0204006
PMCID: PMC6179191
PMID: 30304048
Abstract
Letter identification is an early metric of reading ability that can be reliability tested before a child can decode words. We test the hypothesis that early speech production will be associated with children’s later letter identification. We examined longitudinal growth in early speech production in 9 typically developing children across eight occasions, every 3 months from 9 months to 30 months. At each occasion, participants and their caregivers engaged in a speech sample in a research lab. This speech sample was transcribed for a variety of vocalizations, which were then transformed to calculate consonant-vowel ratio. Consonant-vowel ratio is a measure of phonetic complexity in speech production. At the age of 72 months, children’s letter knowledge was measured. A multilevel model including fixed quadratic age change and a random intercept was estimated using letter identification as a predictor of the growth in early speech production from 9–30 months, measured by the outcome of consonant-vowel ratio. Results revealed that the relation between early speech production and letter identification differed over time. For each additional letter that a child identified, their consonant-vowel ratio at the age of 9 months increased. As such, these results confirmed our hypothesis: more robust early speech production is associated with more accurate letter identification.
Details
- Title: Subtitle
- A longitudinal study of infants’ early speech production and later letter identification
- Creators
- Kelly FarquharsonTiffany P HoganLesa HoffmanJun WangKimber F GreenJordan R Green
- Resource Type
- Journal article
- Publication Details
- PloS one, Vol.13(10), pp.e0204006-e0204006
- DOI
- 10.1371/journal.pone.0204006
- PMID
- 30304048
- PMCID
- PMC6179191
- NLM abbreviation
- PLoS One
- ISSN
- 1932-6203
- eISSN
- 1932-6203
- Publisher
- Public Library of Science; San Francisco, CA USA
- Grant note
- DC006463 / ;
- Alternative title
- Early speech and letter identification
- Language
- English
- Date published
- 2018
- Academic Unit
- Psychological and Quantitative Foundations
- Record Identifier
- 9983993325502771
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