The booklet is intended as a starting point for discussions with children
Helping families deal with children with Asperger's syndrome is the aim of a new book launched on Monday.
The illustrated bilingual booklet, My Brother Gwern - Fy Mrawd Gwern, is aimed at children aged four to seven whose siblings have the condition.
Author Dr Elin Walker Jones said it was a first in the Welsh language and one of only a few in English.
Around 250 delegates were attending a conference on Asperger's Syndrome at Cardiff's Millennium Stadium on Monday.
Autism is a developmental disability affecting social skills, and shares many traits with Asperger's syndrome.
There are thought to be around 18,000 children and adults in Wales with an autistic spectrum disorder (ASD).
Dr Walker Jones, a clinical psychologist at Conwy and Denbighshire NHS Trust, said her booklet was written in simple language for children to understand.
"It is written from a sister's perspective and is a talking point - somewhere to start a discussion with your children," she said.
But she said it was difficult to write a book that covered all cases.
"Each child is different, each family is different and each parent might have different priorities," she said.
"The most important thing is to love your child, and love them for what they are and work through things."
Jacqui Jackson, who has four children with autism, said that there were many misconceptions.
"It isn't always the case that they are good at maths like in Rainman [a film about autism starring Dustin Hoffman] - it's not like that," she said.
"My youngest goes into shops wearing earmuffs because he doesn't like the noise, and hits himself in the face if he doesn't like a smell."
She said that the more resources that were available for parents the better.
"The more information you have, the better-equipped you are at home with the children and to deal with problems in education," she said.
In her opinion, education was a key area as every child was different and had different needs.
"They [children with ASD] are totally unable to be flexible in thought - you have to adapt the environment to suit the child," she added.
Her 16-year-old son Luke Jackson, who has written a book called Freaks, Geeks and the Asperger Syndrome was one of the speakers at Monday's conference.
He said he decided to write the book because he said he did not find a lot of things on the internet very useful.
The day-long conference has been attended by parents of children with Asperger's syndrome and professionals including teachers and other education professionals.