There is strong evidence that the cause of Asperger’s Disorder and ASD lie in the brain. Research studies have repeatedly found differences between the brains of those with Asperger’s Disorder in comparison to those without. While scientists have yet to locate one particular place in the brain they believe might be responsible, many studies suggest the frontal lobe, which is the area around the forehead. Several studies have also found differences between the brains of children with Asperger’s Disorder and those with autism.
Some studies have shown damage in the right temporal lobe—the area around the temples—of those with Asperger’s Disorder, and in the left temporal lobe in autistic people. Other studies have found just the opposite pattern, making it difficult to reach conclusions about these findings. Because Asperger’s Disorder has only been studied in the USA since 1994, there has not been sufficient time to conduct extensive research. Further studies are clearly needed and are underway.
While these studies are promising, it is important to understand that their findings do not mean that brain scanning techniques can diagnose Asperger’s Disorder. Be cautious about any professional suggesting a brain scan for diagnosing any psychological disorder.