The prevalence of intellectual disabilities is often quoted at 1%. A meta-analysis of articles
published between 1980 and 2009 confirmed this prevalence. Changes in diagnostic …

OBJECTIVE: We conducted a meta-analysis of epidemiological studies investigating the
association between maternal age and autism. METHOD: Using recommended guidelines …

Objectives. To describe the association between indicators of socioeconomic status (SES)
and the prevalence of autism spectrum disorder (ASD) in the United States during the period …

In this article, I outline a general framework for the evolutionary analysis of mental disorders
based on the concepts of life history theory. I synthesize and extend a large body of work …

A suite of recent studies has reported positive genetic correlations between autism risk and
measures of mental ability. These findings indicate that alleles for autism overlap broadly …

Background and Objectives Study of the impact of socioeconomic status on autism spectrum
disorders (ASD) and severe intellectual disabilities (ID) has yielded conflicting results …

Autism spectrum disorder (referred to here as autism) is one of several overlapping
neurodevelopmental conditions that have variable impacts on different individuals. This …

Background As well as being highly comorbid conditions, autism spectrum disorders (ASD)
and intellectual disability (ID) share a number of clinically-relevant phenomena. This raises …

Children with autism spectrum disorders (ASDs) tremendously impact people's lives, and the
incidence and prevalence of ASDs are increasing globally. Global health organisations and …

Mounting evidence finds that early life environmental factors increased the probability of
autism spectrum disorder. We estimated prospective associations between early life …