Autism - Sex Differences
Professor David Skuse explains that boys are far more likely than girls to be diagnosed with autism, especially in those individuals with high IQ scores.
One of the most intriguing, to me the most intriguing, aspects of autism, from the point of view of a potential cause, is the fact that this is a condition that is much more commonly recognized in boys than girls. Itâ€™s more common in boys, and those with the lowest IQs, the ratio is about 2:1. But in people with very high IQ, the ratio is more like 10:1 or even more. Why is there this sex difference? And the answer is, we just donâ€™t know. But, it would appear that, in some way, girls are protected from showing autistic symptomatology as a consequence of being a girl because, perhaps of their genetic make up, or because of their hormonal make up. Another possibility is that boys, by their genetic constitution or their hormonal constitution, are made more vulnerable to being autistic. There has to be an explanation there, at the moment we donâ€™t understand what that explanation is.
genetic constitution, high iq, symptomatology, boys and girls, autism, proportion
Professor David Skuse explains that it is highly probable that many different genes cause autism, with each gene contributing a small part to the symptomatology.
Professor David Skuse explains that autism is more common in boys than girls.
Professor David Skuse explains that although it is difficult to calculate the exact proportion of individuals with autism, estimates put the figure at about 0.6 percent.
Autism is a disorder in brain development that becomes apparent in earliest childhood. It is defined by problems in socialization, communication, and repetitive behaviors.
Professor Pat Levitt explains that twin studies of autism show that it is a highly genetic disorder.
Brain scans of close relatives of children with autism reveal clear abnormalities that parallel those seen in autism.
An overview of autism-related content on Genes to Cognition Online.
Portia Iversen explains that it is a misconception that the majority of autistic individuals are mentally retarded.
Doctor Daniel Pine discusses explains that anxiety is more common in girls and women. Depression is also more common in women, but only after puberty. Anxiety may predict depression.
Professor David Skuse discusses whether what happens to the brain during adolescence is analogous to what happens in brain-injury autism.