A longitudinal study of infants' early speech production and later letter identification
dc.contributor.author | Farquharson, Kelly | |
dc.contributor.author | Hogan, Tiffany P. | |
dc.contributor.author | Hoffman, Lesa | |
dc.contributor.author | Wang, Jun | |
dc.contributor.author | Green, Kimber F. | |
dc.contributor.author | Green, Jordan R. | |
dc.contributor.editor | Weng, Xuchu | |
dc.date.accessioned | 2020-02-07T15:57:07Z | |
dc.date.available | 2020-02-07T15:57:07Z | |
dc.date.issued | 2018-10-10 | |
dc.identifier.citation | Farquharson K, Hogan TP, Hoffman L, Wang J, Green KF, Green JR (2018) A longitudinal study of infants' early speech production and later letter identification. PLoS ONE 13(10): e0204006. | en_US |
dc.identifier.uri | http://hdl.handle.net/1808/29956 | |
dc.description.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. Consonantvowel 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. | en_US |
dc.description.sponsorship | (R01 DC006463) | en_US |
dc.publisher | Public Library of Science | en_US |
dc.rights | © 2018 Farquharson et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. | en_US |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | en_US |
dc.title | A longitudinal study of infants' early speech production and later letter identification | en_US |
dc.type | Article | en_US |
kusw.kuauthor | Hoffman, Lesa | |
kusw.kudepartment | Psychology | en_US |
dc.identifier.doi | 10.1371/journal.pone.0204006 | en_US |
dc.identifier.orcid | https://orcid.org/0000-0003-1836-4681 | en_US |
kusw.oaversion | Scholarly/refereed, author accepted manuscript | en_US |
kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
dc.rights.accessrights | openAccess | en_US |
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