1. Early Gesture and Vocabulary Development in Infant Siblings of Children with Autism Spectrum Disorder.
- Author
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Iverson, Jana M., Northrup, Jessie B., Leezenbaum, Nina B., Parladé, Meaghan V., Koterba, Erin A., and West, Kelsey L.
- Subjects
AUTISM ,SIBLINGS ,CAREGIVERS ,INFANT development ,LANGUAGE disorders ,BODY language ,VOCABULARY ,PSYCHOLOGY - Abstract
This study examined longitudinal growth in gestures and words in infants at heightened (HR) versus low risk (LR) for ASD. The MacArthur-Bates Communicative Development Inventory was administered monthly from 8 to 14 months and at 18 and 24 months to caregivers of 14 HR infants diagnosed with ASD (HR-ASD), 27 HR infants with language delay (HR-LD), 51 HR infants with no diagnosis (HR-ND), and 28 LR infants. Few differences were obtained between LR and HR-ND infants, but HR-LD and HR-ASD groups differed in initial skill levels and growth patterns. While HR-LD infants grew at rates comparable to LR and HR-ND infants, growth was attenuated in the HR-ASD group, with trajectories progressively diverging from all other groups. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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