Using a longitudinal correlational design, nine aims will be addressed. The first three aims examine the unique predictors of early lexical development and the potential mediating role that parental input may play in this predictive model.
In Aim 1, we test whether there is incremental (i.e., significant prediction above and beyond other predictors) validity of (a) early child intentional communication, attention following, and object play, (b) early child motor ability and (c) time-varying child vocabulary comprehension in predicting growth rate of communicative word use.
In Aim 2, we test whether there is incremental validity of (a) early child intentional communication, attention following, and object play, (b) attention to child-directed speech, and (b) parental variables in predicting growth rate of comprehension.
In Aim 3, we test whether the association between early parental factors and the child's growth of communicative word use is mediated through the child's development of vocabulary comprehension. The next 3 aims involve testing longitudinal correlations that, if confirmed, are consistent with child effects on parental use of putative facilitative behaviors.
In Aim 4, we test whether children's early frequency of intentional communication and attention following positively predict later frequency of parental linguistic mapping.
In Aim 5, we test whether children's early object play positively predicts later parental synchronous nonobligatory talk.
In Aim 6, we test whether children's early requesting positively predicts later parental tendency to use responsive strategies. The final 3 aims involve testing alternative models against key predictions of the model presented in Figure 1.
In Aim 7, we test whether the association between early parent variables and later comprehension is greater than the association between early comprehension and later parent variables.
In Aim 8, we test whether the association between early comprehension and later expression is greater than the association between early expression and later comprehension.
In Aim 9, we test whether the association between early attention to child directed speech and later comprehension is greater than the association between early comprehension and later attention to child-directed speech. Mixed level modeling, multiple regression, and the modified Pearson-Filon statistic will be used to test the aims. Five years of funding are requested.

Public Health Relevance

The incidence of autism is now estimated to be 1:150 births. Communicative word use by elementary school is a replicated predictor of social and employment outcomes in young adults with adults. Predicting variance in acquiring communicative word use may identify precursors that are appropriate early treatment targets.

Agency
National Institute of Health (NIH)
Institute
National Institute on Deafness and Other Communication Disorders (NIDCD)
Type
Research Project (R01)
Project #
5R01DC006893-03
Application #
8020058
Study Section
Child Psychopathology and Developmental Disabilities Study Section (CPDD)
Program Officer
Cooper, Judith
Project Start
2009-02-01
Project End
2013-01-31
Budget Start
2011-02-01
Budget End
2012-01-31
Support Year
3
Fiscal Year
2011
Total Cost
$607,697
Indirect Cost
Name
Vanderbilt University Medical Center
Department
Psychology
Type
Schools of Education
DUNS #
004413456
City
Nashville
State
TN
Country
United States
Zip Code
37212
Harbison, Amy L; Woynaroski, Tiffany G; Tapp, Jon et al. (2018) A new measure of child vocal reciprocity in children with autism spectrum disorder. Autism Res 11:903-915
Bottema-Beutel, Kristen; Lloyd, Blair; Watson, Linda et al. (2018) Bidirectional influences of caregiver utterances and supported joint engagement in children with and without autism spectrum disorder. Autism Res 11:755-765
Bottema-Beutel, Kristen; Malloy, Caitlin; Lloyd, Blair P et al. (2018) Sequential Associations Between Caregiver Talk and Child Play in Autism Spectrum Disorder and Typical Development. Child Dev 89:e157-e166
Flippin, Michelle; Watson, Linda R (2018) Parental Broad Autism Phenotype and the Language Skills of Children with Autism Spectrum Disorder. J Autism Dev Disord 48:1895-1907
Bottema-Beutel, Kristen; Woynaroski, Tiffany; Louick, Rebecca et al. (2018) Longitudinal associations across vocabulary modalities in children with autism and typical development. Autism :1362361317745856
Sandbank, Micheal; Woynaroski, Tiffany; Watson, Linda R et al. (2017) Predicting Intentional Communication in Preverbal Preschoolers with Autism Spectrum Disorder. J Autism Dev Disord 47:1581-1594
McDaniel, Jena; Yoder, Paul; Watson, Linda R (2017) A Path Model of Expressive Vocabulary Skills in Initially Preverbal Preschool Children with Autism Spectrum Disorder. J Autism Dev Disord 47:947-960
Woynaroski, Tiffany; Oller, D Kimbrough; Keceli-Kaysili, Bahar et al. (2017) The stability and validity of automated vocal analysis in preverbal preschoolers with autism spectrum disorder. Autism Res 10:508-519
Woynaroski, Tiffany; Yoder, Paul; Watson, Linda R (2016) Atypical Cross-Modal Profiles and Longitudinal Associations Between Vocabulary Scores in Initially Minimally Verbal Children With ASD. Autism Res 9:301-10
Woynaroski, Tiffany; Watson, Linda; Gardner, Elizabeth et al. (2016) Early Predictors of Growth in Diversity of Key Consonants Used in Communication in Initially Preverbal Children with Autism Spectrum Disorder. J Autism Dev Disord 46:1013-24

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