Background Current global estimates suggest the proportion of the population with autism
spectrum disorder (ASD) who have intellectual disability (ID) is approximately 50%. Our …

Importance The definition and nature of autism have been highly debated, as exemplified by
several revisions of theDSM (DSM-III, DSM-IIIR, DSM-IV, andDSM-5) criteria. There has …

OBJECTIVES We aimed to describe the intellectual ability and ratio of boys to girls with
average or higher IQ within autism spectrum disorder (ASD) cases identified in a population …

While recent studies suggest a converging role for genetic factors towards risk for
nosologically distinct disorders including autism, intellectual disability (ID), and epilepsy …

Prevalence estimates of autism are essential for informing public policy, raising awareness,
and developing research priorities. Using a systematic review, we synthesized estimates of …

Autism spectrum disorder (ASD) is characterized as a very heterogeneous child-onset
disorder, whose heterogeneity is partly determined by differences in intelligence quotient …

Video Abstract BACKGROUND Intellectual ability predicts functional outcomes for children
with autism spectrum disorder (ASD). It is essential to classify ASD children with and without …

A meta-analysis was performed on the 133 cognitive and behavioral papers in autism using
comparison groups in the 1999–2002 period. High-functioning (average IQ: 84.7) …

Longitudinal studies have generally reported poor outcomes in adulthood for the majority of
individuals (c. 50–60%) with autism. Several factors putatively predict outcome (eg IQ), but …

Background Research findings investigating the sociodemographics of autism spectrum
disorder (ASD) have been inconsistent and rarely considered the presence of intellectual …