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DeVeney, Shari L.; Kyvelidou, Anastasia; Mather, Paris – Autism & Developmental Language Impairments, 2021
Background and Aims: The purpose of this exploratory study was to expand existing literature on prelinguistic vocalizations by reporting results of the first home-based longitudinal study examining a wide variety of behaviors and characteristics, including early vocalizations, across infants at low and elevated risk of autism spectrum disorder…
Descriptors: Autism Spectrum Disorders, Infants, Child Development, At Risk Persons
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Landa, Rebecca J.; Gross, Alden L.; Stuart, Elizabeth A.; Faherty, Ashley – Child Development, 2013
Retrospective studies indicate 2 major classes of autism spectrum disorder (ASD) onset: early and later, after a period of relatively healthy development. This prospective, longitudinal study examined social, language, and motor trajectories in 235 children with and without a sibling with autism, ages 6-36 months. Children were grouped as: ASD…
Descriptors: Pervasive Developmental Disorders, Autism, Comparative Analysis, Longitudinal Studies