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Pause and utterance duration in child-directed speech in relation to child vocabulary size
Stockholm University, Faculty of Humanities, Department of Linguistics, Phonetics.ORCID iD: 0000-0002-3279-6328
Stockholm University, Faculty of Humanities, Department of Linguistics, Phonetics.ORCID iD: 0000-0001-7658-9307
Stockholm University, Faculty of Humanities, Department of Linguistics, Phonetics.ORCID iD: 0000-0002-7980-3601
Stockholm University, Faculty of Humanities, Department of Linguistics, Phonetics.ORCID iD: 0000-0002-8036-516X
2015 (English)In: Journal of Child Language, ISSN 0305-0009, E-ISSN 1469-7602, Vol. 42, no 5, p. 1158-1171Article in journal (Refereed) Published
Abstract [en]

This study compares parental pause and utterance duration in conversations with Swedish speaking children at age 1;6 who have either a large, typical, or small expressive vocabulary, as measured by the Swedish version of the McArthur-Bates CDI. The adjustments that parents do when they speak to children are similar across all three vocabulary groups; they use longer utterances than when speaking to adults, and respond faster to children than they do to other adults. However, overall pause duration varies with the vocabulary size of the children, and as a result durational aspects of the language environment to which the children are exposed differ between groups. Parents of children in the large vocabulary size group respond faster to child utterances than do parents of children in the typical vocabulary size group, who in turn respond faster to child utterances than do parents of children in the small vocabulary size group.

Place, publisher, year, edition, pages
2015. Vol. 42, no 5, p. 1158-1171
Keywords [en]
first language aqcuisition, parent-child interaction, vocabulary size, pause duration, utterance duration
Keywords [sv]
barns språkutveckling, föräldra-barn-interaktion, ordförrådsstorlek, pauser, yttrandelängd
National Category
General Language Studies and Linguistics
Research subject
Linguistics
Identifiers
URN: urn:nbn:se:su:diva-112375DOI: 10.1017/S0305000914000609ISI: 000358577400009OAI: oai:DiVA.org:su-112375DiVA, id: diva2:779138
Funder
Swedish Research Council, 2008-5094Swedish Research Council, 2011-2263Swedish Research Council, 421-2007-6400Available from: 2015-01-12 Created: 2015-01-12 Last updated: 2018-10-31Bibliographically approved
In thesis
1. Turn-taking and early phonology: Contingency in parent-child interaction and assessment of early speech production
Open this publication in new window or tab >>Turn-taking and early phonology: Contingency in parent-child interaction and assessment of early speech production
2018 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This thesis focuses on contingency in parent-child interaction, investigating it in the light of the linguistic capacity of the child and the status of the caregiver. Further, the thesis covers the development of two tools to assess the developmental maturity level of expressive phonology. A functional emergentist perspective on language acquisition is taken, which includes a phonetic perspective on phonological development. Both infant language development and factors that influence parent responsiveness are explored. 

The thesis contains four studies. In the first study, durations of parents’ utterances and pauses in interaction with their 18-month-old infants were related to the infant’s vocabulary size. Recordings of interactions of fifteen children and their parents were made at home in daily life situations. The children were divided into three groups according to their vocabulary size: large, typical or small. The main finding is that parents in the large vocabulary size group responded faster to their children compared to the parents in the typical size vocabulary group, who in turn responded faster than the parents in the small vocabulary size group. 

In study two, duration in vocal turn-taking between 6-month old infants and their caregivers was investigated, in terms of the status of the caregiver and the sex of the infant. Caregivers’ pauses were measured in 10-minute caregiver-infant interactions recorded at home. It was found that primary caregivers responded faster to their infants compared to secondary caregivers, and that in turn, infants responded faster to the primary caregiver than to the secondary caregiver. 

Study three introduces the Word Complexity Measure for Swedish (WCM-SE), a tool for calculating phonological complexity in words or utterances. Calculations are based on ten parameters describing speech structures that are considered phonetically complex to produce. In the development of  the WCM-SE, both language-specific and language-general descriptions of speech development were considered, as well as universal acoustic and aerodynamic principles. 

Study four documents the selection of Swedish words for the word lists in the test Profiles of Early Expressive Phonological Skills for Swedish (PEEPS-SE). The selection was based on criteria of age of acquisition and word complexity, as measured by the WCM-SE. 

The findings presented in this thesis contribute to our knowledge of early interaction and parents’ potential impact on the child’s early language and communication development. Further, the tools developed for the assessment of Swedish are valuable contributions both to the research field of early phonology and to clinical work in Sweden. 

Place, publisher, year, edition, pages
Stockholm: Department of Linguistics, Stockholm University, 2018. p. 101
Series
PERILUS, ISSN 0282-6690 ; XXVI
Keywords
parent-child interaction, turn-taking, parental responsiveness, phonological development, phonological complexity, assessment of speech production
National Category
General Language Studies and Linguistics
Research subject
Phonetics
Identifiers
urn:nbn:se:su:diva-61853 (URN)978-91-7797-498-7 (ISBN)978-91-7797-499-4 (ISBN)
Public defence
2018-12-14, hörsal 12, hus F, Universitetsvägen 10 F, plan 2, Stockholm, 09:00 (Swedish)
Opponent
Supervisors
Note

At the time of the doctoral defense, the following paper was unpublished and had a status as follows: Paper 2: Manuscript.

Available from: 2018-11-21 Created: 2018-10-30 Last updated: 2018-11-13Bibliographically approved

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