Are parents and professionals missing the signs of autism in girls? Kate Reynolds looks at why female autism is often diagnosed late and misunderstood.
The most common autistic spectrum disorders (ASD) seen by health and education services are autistic disorder, also called childhood or classic autism, and Asperger’s syndrome*. Autistic disorder is characterised by speech delay and signs of impaired social interaction, communication and imagination.
Lorna Wing’s research found a ratio of two to one male to female prevalence of autistic disorder and fifteen to one for Asperger’s syndrome, suggesting that girls were less prone to the more subtle forms of ASD (Wing, 1981). Certainly, males are more susceptible to organic conditions (where there is measurable disease) such as autism which is a neurological developmental condition. In addition, girls appear to have some protection from the genetic variants that are thought to cause autism.
However, it is becoming clear that girls simply may be under-represented in Asperger figures because the history of research into ASD, from its inception with Kanner’s and Asperger’s work in the mid 1940s onwards, is based on males. Diagnostic tools – using interviews, specific tasks and categorisation of behaviours resulting in quantitative scores for analysis – were developed according to male phenotypes (Gould and Ashton-Smith, 2011). The ways in which Asperger’s syndrome manifests in girls have not been adequately investigated and only in the last five to ten years has attention been focused on females.
To read the complete article on the Special Educational Needs Magazine website, click here.