In my current WIP (YA Dystopian), my main character's little brother of nine years has autism. Mind you, he's an autistic savant so he's very clever when it comes to tech and creating things but he still suffers from the inability to do basic things like buttoning his shirt or tying his shoe laces.
When it comes to writing dialogue, i find that i have a bit of a hard time because i am not quite sure the types of things an autistic child would say or the way he would say them. Would he shout? Do i need to spell things differently when it comes to his dialogue? Would he elude some words and add other unnecessary ones?
Another thing i really need help with would be the way he would act. Would he jump a lot at random times? Move his fingers oddly? Smile a lot?
Any insight on the topic or tips as to how i could write him convincingly would be very much appreciated.
Thanks so much for your time =D