In the interest of more systematically documenting the early signs of autism, and of testing
specific hypotheses regarding their underlying neurodevelopmental substrates, we have …

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 …

The present paper documents the development of autism/autistic spectrum disorder in a
consecutive series of nine high-risk infants followed prospectively from 6 months of age …

Studies of infant siblings of older autistic probands, who are at elevated risk for autism, have
demonstrated that the defining features of autism are not present in the first year of life but …

We integrate converging evidence from a variety of research areas in typical and atypical
development to motivate a developmental framework for understanding the emergence of …

The authors gratefully acknowledge the support of the National Institute of Child Health and
Human Development (grants 1-PO1-HD35482-01, 5 P01-HD042127-02), the National …

In this editorial preface, we first describe the historical roots of this special issue. We then
introduce the papers, all of which focus on the very early phenotype of autism and the broad …

International research to understand infant patterns of development in autism spectrum
disorders (ASDs) has recently focused on a research paradigm involving prospective …

Although initially described as an inborn disorder of affective contact, information on autism
as it exists in infants has been limited. Delays in diagnosis, lack of information about the …

Autism spectrum disorder (ASD) is a heterogeneous condition that affects 1 in 68 children.
Diagnosis is based on the presence of characteristic behavioral impairments that emerge in …