There are people with Asperger's whom I've met who certainly would be very upset to learn they'd hurt another person's feelings. They often have very strong moral consciences and moral codes. They care about not hurting people.
I think it's particularly clear in borderline personality disorder (BPD) that there's a strong association between early environmental deprivation and neglect and abuse and later outcome of BPD.
Difficulty empathising translates into a whole set of hurdles. You might be last person to get the point of a joke, which can leave you feeling like an outsider. You might end up saying something that another person finds hurtful or offensive, when that was the last thing you intended.
If we think about the autism spectrum as involving a very strong drive to systemize, that can have very positive consequences for the individual and for society. The downside is that when you try to systemize certain parts of the world like people and emotions, those sorts of phenomena are less lawful and harder to systemize.
The idea of a cure for autism is itself controversial. Some people with autism say they don't want to be cured, because autism gives them a different way of looking at the world.
Well, in the general population, we find differences between the typical male and typical female. For example, males seem to be more interested in systems and females seem to be more interested in people and particularly people's emotions.
Everyone recognises that genes are part of the story but autism isn't 100% genetic. Even if you have identical twins who share all their genes, you can find that one has autism and one doesn't. That means that there must be some non-genetic factors.
Autism spectrum disorders are linked to other problems: Most of the people we see in our Asperger clinic for adults also suffer from clinical levels of depression.
Among both individuals with high-functioning autism or Asperger and their parents, many are superfast at spotting details. You hardly have time to get the experimental materials out on the table before they've spotted the target.
In the person with autism, the brain may already be seeing the part and be less distracted by the whole, and in the person without autism the brain may have to set aside its picture of the whole to analyze the detail.
When I first started in this field there were all kinds of stereotypes about autism, as if these were children from another planet, or children who had been brought up by wolves, that they weren't part of our population and were somehow separate.
I'm hoping that autism is going to get to that same point, where it becomes quite ordinary to say, 'I have autism,' or 'I have Asperger's syndrome,' and that there will be many more resources available to make life easier for people on the autistic spectrum.
Because people with autism are also strongly obsessional, meaning that they pursue their current interest to extraordinary detail and lengths and in great depth, they can develop 'tunnel vision' that prevents them from seeing the bigger picture, including the repercussions of their current actions.
Autistic people's disabilities are widely known, but one of their best-established strengths is their attention to detail.
Like any skill, systemising occurs on a bell curve in the population, with some people being faster at spotting patterns than others. Autistic people are often strong systemisers. Indeed their attention is often described as 'obsessive' as they check and recheck the patterns of a system.
We've done fMRI scans of people taking the 'Reading the Eyes' test, and what we've found is that the amygdala lights up in trying to figure out people's thoughts and feelings. In people with autism, they show highly reduced amygdala activity.
Autism doesn't seem to have a seasonal component, unlike some forms of depression.
A diagnosis of Asperger Syndrome can be useful to help a person understand why they have had difficulties.