Faculty of Education - Research Publications
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ItemAssociations between early maternal behaviours and child language at 36 months in a cohort experiencing adversity(WILEY, 2019-01)BACKGROUND: Variations in parenting, more specifically less responsive and more directive parenting, contribute to language difficulties for children experiencing adversity. Further investigation of associations between specific responsive and directive behaviours and child language is required to understand how behaviours shape language over time within different populations. As language is dyadic, further exploration of how mother-child interactions moderate associations is also important. AIMS: To investigate associations between specific responsive and directive maternal behaviours, the quality of mother-child interaction (fluency and connectedness) and child language in a cohort experiencing adversity. METHODS & PROCEDURES: Pregnant women experiencing adversity were recruited from maternity hospitals in Australia. At 12 months, videos of mother-infant free play were collected. Videos were coded for maternal behaviours and fluency and connectedness (n = 249). At 36 months, child language was measured using a standardized language test. Linear regression models were used to examine associations and the moderating role of fluency and connectedness was explored. OUTCOMES & RESULTS: Responsive yes/no questions were positively associated with language scores. Unsuccessful redirectives were negatively associated with language scores. The moderation effect of fluency and connectedness was equivocal in the current data. CONCLUSIONS & IMPLICATIONS: Findings reproduce and extend previous research highlighting key features of mother-child interactions associated with child language trajectories. Findings also augment knowledge of risk and protective factors related to language for children experiencing adversity and highlight where targeted interventions might be successful.
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ItemValidation of Dodd's Model for Differential Diagnosis of childhood speech sound disorders: a longitudinal community cohort study(WILEY, 2019-06)AIM: Dodd's Model for Differential Diagnosis is one of the available clinical diagnostic classification systems of childhood speech sound disorders. Yet we do not understand the validity of this system beyond clinical samples, precluding its application in epidemiological or population-based research. This study aimed to determine the prevalence of subgroups of speech sound disorders in a community sample, relative to past clinical samples, in children speaking standard Australian English. METHOD: We examined speech development in a community-ascertained sample of children at 4 years (n=1607). Inclusion for speech sound disorder was a score of less than or equal to 1 standard deviation on a standardized speech test, and/or research assistant concern, and/or three or more speech errors on sounds typically acquired by 4 years. Dodd's model was then applied to 126 children. RESULTS: Data revealed proportions of children across Dodd's diagnostic subgroups as follows: suspected atypical speech motor control (10%); inconsistent phonological disorder (15%); consistent atypical phonological disorder (20%); phonological delay (55%); and articulation disorder alone (0%). The findings are in line with known prevalence of these subgroups in clinical populations. INTERPRETATION: Our findings provide additional support for speech-language pathologists to use this system in clinical practice for differential diagnosis and targeted intervention of speech sound disorders in children. WHAT THIS PAPER ADDS: Dodd's Model for Differential Diagnosis is the first classification system of speech sound disorders to be applicable to both clinical and community cohorts.
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ItemPaths to language development in at risk children: a qualitative comparative analysis (QCA)(BMC, 2019-04-05)BACKGROUND: Childhood language development is related to long term educational, employment, health and social outcomes. Previous research identifies a complex range of risk and protective factors which result in good and poor language outcomes for children, however children at risk are an underrepresented group in these studies. Our aim is to investigate the combinations of factors (paths) that result in good and poor language outcomes for a group of 5 year old children of mothers experiencing adversity. METHODS: This mixed methods study utilised longitudinal data from a randomised control trial of sustained home visiting (MECSH) to determine the language outcomes in at risk children. Mothers were randomly assigned to a comparison group at entry to the study (prior to child's birth). Their children who were retained at entry to school completed language assessments (n = 41) and were participants in this study. Influence of 13 key factors derived from the extant literature that impact language development were explored. Regression was used to determine the six key factors of influence and these were used in the Qualitative Comparative Analysis (QCA). QCA was employed to examine the necessary and sufficient conditions and paths affecting language development linked to good and poor language outcomes. A post hoc analysis of the risk and protective paths to good and poor language outcomes was also conducted. RESULTS: Thirteen distinct pathways led to good language outcomes and four paths to poor language outcomes in five year old at risk children. A variety of condition combinations resulted in these outcomes, with maternal responsivity, toddler development and number of children in the home being key. High and low maternal education influenced both good and poor language development. CONCLUSIONS: The paths to good and poor language outcomes were different and complex. Most paths to a good language outcome involved protective factors, though not always. In addition, paths to poor language more often involved risk factors. The varied patterns of risk and protective factors point to the need for interventions across the first five years of life in both health and education for families which can respond to these risk and protective patterns. TRIAL REGISTRATION: The original RCT was retrospectively registered in the ANCTR: ACTRN12608000473369 .
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ItemAn Abecedarian Approach with Aboriginal Families and Their Young Children in Australia: Playgroup Participation and Developmental Outcomes(SPRINGER, 2019-08)New approaches to support the early learning for young Indigenous children are important to government policies across Australia. This study explores whether the Abecedarian Approach Australia (3a) intervention, with strong cultural adaptations, can boost young Aboriginal children’s early language and learning skills, prior to preschool. Participants in this study were Aboriginal children attending playgroups, Families as First Teachers, in school settings in two remote communities in the Northern Territory. Implementation data on two components (Conversational Reading and LearningGames) of the Abecedarian Approach Australia (3a) intervention are reported, and the level of exposure the children had to the programme during the study period is analysed. Child outcomes were assessed on the Brigance Early Childhood Screen II for 149 children aged from 24 to 56 months. Children’s language and early learning were associated with intervention dosage. Higher exposure to Conversational Reading and LearningGames predicted stronger language and overall development for young children. This study demonstrates that this intervention can be delivered effectively in playgroups in remote settings and is a meaningful and robust strategy to support early childhood learning, with potential to improve educational outcomes for young Aboriginal children in remote communities.