This article outlines the over‐pruning hypothesis of autism. The hypothesis originates in a
neurocomputational model of the regressive sub‐type (Thomas, Knowland & Karmiloff …

Research on ASD in infancy has provided a rationale for developing screening instruments
for children from the first year of life to age of 18 months. A comprehensive literature search …

Background Atypical lateralization of language-related functions has been repeatedly found
in individuals with autism spectrum conditions (ASC). Few studies have, however …

Existing evidence suggests executive functioning (EF) deficits may be present in children
with autism spectrum disorder (ASD) by 3 years of age. It is less clear when, prior to 3 years …

Over the past 5 years, a great deal of information about the early course of autism spectrum
disorder (ASD) has emerged from longitudinal prospective studies of infants at high risk for …

Fragile X syndrome (FXS) is the most common known genetic cause of autism spectrum
disorder (ASD). Although 50–75% of children with FXS meet ASD criteria, no studies have …

Abnormalities in motor skills have been regarded as part of the symptomatology
characterizing autism spectrum disorder (ASD). It has been estimated that 80% of subjects …

OBJECTIVE: Delayed onset of independent walking is common in intellectual disability (ID).
However, in children with autism spectrum disorders (ASD), delayed walking has not been …

Background Although it is well established that the prevalence of autism spectrum disorder
(ASD) is higher in males than females, there is relatively little understanding of the …

Objectives There is no medical test for autism spectrum disorder (ASD), a heterogeneous
condition currently defined in the Diagnostic and Statistical Manual of Mental Disorders Fifth …