Context To our knowledge, no prospective studies of the developmental course of early and
later diagnosis of autism spectrum disorders from 14 months of age exist. Objective To …

Background To delineate the early progression of autism spectrum disorder (ASD)
symptoms, this study investigated developmental characteristics of infants at high familial …

This study examined social communication profiles from behavior samples videotaped
between 18 and 24 months of age in three groups of children: 50 with autism spectrum …

OBJECTIVE: To examine prospectively the emergence of behavioral signs of autism in the
first years of life in infants at low and high risk for autism. METHOD: A prospective …

OBJECTIVE: To chart the emergence of precursors and early signs of autism spectrum
disorder (ASD) and autistic traits in the Avon Longitudinal Study of Parents and Children, a …

The aims of the present study were to describe variations in the early course of development
in autism by utilizing an in-depth parent interview that incorporated techniques to improve …

Objective This study had 3 goals, which were to examine the following: the frequency of
atypical development, consistent with the broader autism phenotype, in high-risk infant …

This prospective, longitudinal, study charted the developmental profiles of young children
with Autism Spectrum Disorders (ASD) identified through routine developmental …

Retrospective studies indicate 2 major classes of autism spectrum disorder (ASD) onset:
early and later, after a period of relatively healthy development. This prospective …

Background: Autism is rarely diagnosed before three years of age despite evidence
suggesting prenatal abnormalities in neurobiological processes. Little is known about when …