BackgroundAutism spectrum disorders (ASDs) are persistent disabling neurodevelopmental
disorders clinically evident from early childhood. For the first time, the burden of ASDs has …

We provide a systematic review of epidemiological surveys of autistic disorder and
pervasive developmental disorders (PDDs) worldwide. A secondary aim was to consider the …

This article reviews the results of 43 studies published since 1966 that provided estimates
for the prevalence of pervasive developmental disorders (PDDs), including autistic disorder …

Undoubtedly, one of the most frequently studied conditions in the field of mental health today
is the autism spectrum disorders (ASD). One of the most controversial topics with respect to …

This paper was commissioned by the committee on the Effectiveness of Early Education in
Autism of the National Research Council (NRC). It provides a review of epidemiological …

The quantity and quality of research into autism and related conditions have increased
dramatically in recent years. Consequently we selectively review key accomplishments and …

For decades after Kanner's original paper on the subject was published in 1943, autism was
generally considered to be a rare condition with a prevalence of around 2–4 per 10,000 …

Research suggests that heredity and early fetal development play a causal role in autism.
This case-control study explored the association between perinatal factors, parental …

Is the incidence of autistic disorder and other pervasive developmental disorders (PDDs)
increasing? Recent epidemiological surveys of autistic disorder and other PDDs have …

Aim: Several reviews have noted a huge increase in the rate of diagnosed autism spectrum
disorders. The main aims of this paper are: 1) to use published empirical findings to consider …