TY - JOUR
T1 - Developmental Trajectories in Children With and Without Autism Spectrum Disorders
T2 - The First 3 Years
AU - Landa, Rebecca J.
AU - Gross, Alden L.
AU - Stuart, Elizabeth A.
AU - Faherty, Ashley
PY - 2013/3
Y1 - 2013/3
N2 - 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 identified by 14 months, ASD identified after 14 months, and no ASD. Despite groups' initial similar developmental level at 6 months, ASD groups exhibited atypical trajectories thereafter. Impairment from 14 to 24 months was greater in the Early-ASD than the Later-ASD group, but comparable at 36 months. Developmental plateau and regression occurred in some children with ASD, regardless of timing of ASD diagnosis. Findings indicate a preclinical phase of varying duration for ASD.
AB - 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 identified by 14 months, ASD identified after 14 months, and no ASD. Despite groups' initial similar developmental level at 6 months, ASD groups exhibited atypical trajectories thereafter. Impairment from 14 to 24 months was greater in the Early-ASD than the Later-ASD group, but comparable at 36 months. Developmental plateau and regression occurred in some children with ASD, regardless of timing of ASD diagnosis. Findings indicate a preclinical phase of varying duration for ASD.
UR - http://www.scopus.com/inward/record.url?scp=84875286543&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84875286543&partnerID=8YFLogxK
U2 - 10.1111/j.1467-8624.2012.01870.x
DO - 10.1111/j.1467-8624.2012.01870.x
M3 - Article
C2 - 23110514
AN - SCOPUS:84875286543
VL - 84
SP - 429
EP - 442
JO - Child Development
JF - Child Development
SN - 0009-3920
IS - 2
ER -