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Language growth in very young siblings at risk for autism spectrum disorder

Eva Bruyneel (UGent) , Ellen Demurie (UGent) , Petra Warreyn (UGent) , Wim Beyers (UGent) , Sofie Boterberg (UGent) , Chloè Bontinck (UGent) , Nele Dewaele and Herbert Roeyers (UGent)
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Abstract
Background Children with autism spectrum disorder (ASD) show substantial variability in their language development. Language problems are highly prevalent in these children. In addition, the quality of early language abilities contributes to the overall development of these children and is highly predictive of their adult outcome. Yet, little is known about language development in children at risk of ASD during the first years of life. Aims To compare early receptive language (RL) and expressive language (EL) development in children at risk of ASD and determine predictors of language development. Methods & Procedures Developmental trajectories of RL and EL were investigated from 10 to 36 months of age in younger siblings of typically developing children (LR-sibs, N = 30) and in younger siblings of children with ASD (HR-sibs, N = 31) using the Mullen Scales of Early Learning. Furthermore, both child and demographic characteristics were examined as possible predictors of language development. Outcomes & Results Both groups showed similar growth curves for RL and EL and the majority of the children showed average (within +/- 1.5 SD of the mean) or above-average language abilities. Nevertheless, the mean growth of EL was lower and the variation in growth of both RL and EL was higher in HR-sibs than in LR-sibs. Furthermore, early child characteristics were predictive of language development in both groups. Yet, some child characteristics seemed to be of more importance in HR-sibs than in LR-sibs. Consequently, lower non-verbal abilities at 10 months in both groups and a higher degree of ASD characteristics at 14 months in HR-sibs may be indicative of difficulties in language development. Conclusions & Implications HR-sibs show more variation in their language development than LR-sibs during the first 3 years of life. The majority of HR-sibs, however, did not present with below-average language abilities. Yet, early characteristics of ASD may be a red flag for difficulties in the language development of HR-sibs.
Keywords
Speech and Hearing, Linguistics and Language, Language and Linguistics, autism spectrum disorder, early language development, high-risk siblings, predictors, BABY SIBLINGS, INFANT SIBLINGS, FOLLOW-UP, CHILDREN, ABILITIES, TODDLERS, INDIVIDUALS, PREDICTORS, EMERGENCE, PHENOTYPE

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MLA
Bruyneel, Eva, et al. “Language Growth in Very Young Siblings at Risk for Autism Spectrum Disorder.” INTERNATIONAL JOURNAL OF LANGUAGE & COMMUNICATION DISORDERS, vol. 54, no. 6, 2019, pp. 940–53.
APA
Bruyneel, E., Demurie, E., Warreyn, P., Beyers, W., Boterberg, S., Bontinck, C., … Roeyers, H. (2019). Language growth in very young siblings at risk for autism spectrum disorder. INTERNATIONAL JOURNAL OF LANGUAGE & COMMUNICATION DISORDERS, 54(6), 940–953.
Chicago author-date
Bruyneel, Eva, Ellen Demurie, Petra Warreyn, Wim Beyers, Sofie Boterberg, Chloè Bontinck, Nele Dewaele, and Herbert Roeyers. 2019. “Language Growth in Very Young Siblings at Risk for Autism Spectrum Disorder.” INTERNATIONAL JOURNAL OF LANGUAGE & COMMUNICATION DISORDERS 54 (6): 940–53.
Chicago author-date (all authors)
Bruyneel, Eva, Ellen Demurie, Petra Warreyn, Wim Beyers, Sofie Boterberg, Chloè Bontinck, Nele Dewaele, and Herbert Roeyers. 2019. “Language Growth in Very Young Siblings at Risk for Autism Spectrum Disorder.” INTERNATIONAL JOURNAL OF LANGUAGE & COMMUNICATION DISORDERS 54 (6): 940–953.
Vancouver
1.
Bruyneel E, Demurie E, Warreyn P, Beyers W, Boterberg S, Bontinck C, et al. Language growth in very young siblings at risk for autism spectrum disorder. INTERNATIONAL JOURNAL OF LANGUAGE & COMMUNICATION DISORDERS. 2019;54(6):940–53.
IEEE
[1]
E. Bruyneel et al., “Language growth in very young siblings at risk for autism spectrum disorder,” INTERNATIONAL JOURNAL OF LANGUAGE & COMMUNICATION DISORDERS, vol. 54, no. 6, pp. 940–953, 2019.
@article{8627100,
  abstract     = {Background Children with autism spectrum disorder (ASD) show substantial variability in their language development. Language problems are highly prevalent in these children. In addition, the quality of early language abilities contributes to the overall development of these children and is highly predictive of their adult outcome. Yet, little is known about language development in children at risk of ASD during the first years of life. Aims To compare early receptive language (RL) and expressive language (EL) development in children at risk of ASD and determine predictors of language development. Methods & Procedures Developmental trajectories of RL and EL were investigated from 10 to 36 months of age in younger siblings of typically developing children (LR-sibs, N = 30) and in younger siblings of children with ASD (HR-sibs, N = 31) using the Mullen Scales of Early Learning. Furthermore, both child and demographic characteristics were examined as possible predictors of language development. Outcomes & Results Both groups showed similar growth curves for RL and EL and the majority of the children showed average (within +/- 1.5 SD of the mean) or above-average language abilities. Nevertheless, the mean growth of EL was lower and the variation in growth of both RL and EL was higher in HR-sibs than in LR-sibs. Furthermore, early child characteristics were predictive of language development in both groups. Yet, some child characteristics seemed to be of more importance in HR-sibs than in LR-sibs. Consequently, lower non-verbal abilities at 10 months in both groups and a higher degree of ASD characteristics at 14 months in HR-sibs may be indicative of difficulties in language development. Conclusions & Implications HR-sibs show more variation in their language development than LR-sibs during the first 3 years of life. The majority of HR-sibs, however, did not present with below-average language abilities. Yet, early characteristics of ASD may be a red flag for difficulties in the language development of HR-sibs.},
  author       = {Bruyneel, Eva and Demurie, Ellen and Warreyn, Petra and Beyers, Wim and Boterberg, Sofie and Bontinck, Chloè and Dewaele, Nele and Roeyers, Herbert},
  issn         = {1368-2822},
  journal      = {INTERNATIONAL JOURNAL OF LANGUAGE & COMMUNICATION DISORDERS},
  keywords     = {Speech and Hearing,Linguistics and Language,Language and Linguistics,autism spectrum disorder,early language development,high-risk siblings,predictors,BABY SIBLINGS,INFANT SIBLINGS,FOLLOW-UP,CHILDREN,ABILITIES,TODDLERS,INDIVIDUALS,PREDICTORS,EMERGENCE,PHENOTYPE},
  language     = {eng},
  number       = {6},
  pages        = {940--953},
  title        = {Language growth in very young siblings at risk for autism spectrum disorder},
  url          = {http://dx.doi.org/10.1111/1460-6984.12497},
  volume       = {54},
  year         = {2019},
}

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