1 in 88 children are diagnosed with autism. Why are these kids autistic? What is autism? My younger brother was diagnosed with autism at age 2, he learns slower than other children and needs more one on one help. For me as a child, I learned a lot as well and the main thing I learned was to be respectful of other people despite their disabilities. I decided to write a book for children who have siblings with autism or want to learn what it is like to grow up having an autistic sibling. Siblings are out best friends and it is important to be there for your sibling. When they need support or someone there, the first person they will look for is you because other than your parents, you know your sibling and know what's best for them.