2 What is autism?
This section gives an overview of key facts about autism. Read it through, and add to your notes again where necessary.
is considered to be a lifelong,
Autism is much more common than was previously thought. About one per cent (or one in a hundred) of people in the UK are thought to be on the autism spectrum. You may know someone with autism, or be on the autism spectrum yourself.
The exact causes are still unknown, but there is good evidence that subtly atypical brain function may lie behind the differences in thinking and behaviour. It is also clear that autism is highly