Out of the mouths of babes: vocal production in infant siblings of children with ASD
- 11 October 2010
- journal article
- Published by Wiley in Journal of Child Psychology and Psychiatry
- Vol. 52 (5), 588-598
- https://doi.org/10.1111/j.1469-7610.2010.02332.x
Abstract
Background: Younger siblings of children with autism spectrum disorders (ASD) are at higher risk for acquiring these disorders than the general population. Language development is usually delayed in children with ASD. The present study examines the development of pre‐speech vocal behavior in infants at risk for ASD due to the presence of an older sibling with the disorder. Methods: Infants at high risk (HR) for ASD and those at low risk, without a diagnosed sibling (LR), were seen at 6, 9, and 12 months as part of a larger prospective study of risk for ASD in infant siblings. Standard clinical assessments were administered, and vocalization samples were collected during play with mother and a standard set of toys. Infant vocal behavior was recorded and analyzed for consonant inventory, presence of canonical syllables, and of non‐speech vocalizations, in a cross‐sectional design. Children were seen again at 24 months for provisional diagnosis. Results: Differences were seen between risk groups for certain vocal behaviors. Differences in vocal production in the first year of life were associated with outcomes in terms of autistic symptomotology in the second year. Conclusions: Early vocal behavior is a sensitive indicator of heightened risk for autistic symptoms in infants with a family history of ASD.Keywords
This publication has 55 references indexed in Scilit:
- Automated vocal analysis of naturalistic recordings from children with autism, language delay, and typical developmentProceedings of the National Academy of Sciences of the United States of America, 2010
- What are infant siblings teaching us about autism in infancy?Autism Research, 2009
- Clinical Assessment and Management of Toddlers With Suspected Autism Spectrum Disorder: Insights From Studies of High-Risk InfantsPublished by American Academy of Pediatrics (AAP) ,2009
- Language outcomes of toddlers with autism spectrum disorders: a two year follow‐upAutism Research, 2008
- Variation in Vocal-Motor Development in Infant Siblings of Children with AutismJournal of Autism and Developmental Disorders, 2006
- The Familial Aggregation of the Lesser Variant in Biological and Nonbiological Relatives of PDD Probands: a Family History StudyJournal of Child Psychology and Psychiatry, 2000
- Sex differences in pervasive developmental disordersJournal of Autism and Developmental Disorders, 1993
- From babbling towards the sound systems of English and French: a longitudinal two-case studyJournal of Child Language, 1992
- Babbling and early speech: continuity and individual differencesFirst Language, 1989
- Infant babbling and speechJournal of Child Language, 1976