I have seen that a new study has come out documenting handwriting problems in autistic children. I have had great difficulties with handwriting and printing. Contrary to some published reports of autistic children having superior scores on the block design subtest of the Wechsler performance IQ test, I score in the far subnormal range on this.
Also, some persons with autism do have very superior fine motor coordination skills such as Stephen Wiltshire and the lesser known Stephanie Lynn Keil who is also a talented artist.
I had to have extra help one on one tutoring for handwriting for years as a small child. I remember one tutor could only tutor me during recess or the school felt it was the only time they could give me the extra help. While the other kids enjoyed a recess break, I had to spend time being tutored in handwriting.
I later went to after school to a place where they claimed their educational methods remediated perceptual impairments that caused my handwriting problems (as well as perceptual problems that caused dyslexia which I don't have). This was another example of a pie-in-the-sky special education promise that turned out in reality to be shit-from-the-sewer. They did not help at all.
I recently wrote a blog post inquiring about fine motor coordination problems. The diagnosis given to me before the autism diagnosis was "fine motor coordination problem".
The article states that they got a standard score on the perceptual part of an IQ test. I don't know if this means they had normal scores in block design, etc.
So I am still interested in reading about handwriting and motor impairments in autistic children. I guess this shows that while autistics may have some symptoms in common that not all of them are alike and different conditions are labeled "autism".
I am not sure there is anyway I will ever be able to know exactly how my brain was damaged and what the neuroanatomical correlates are that cause the self-stimulatory movements and handwriting problems and all else that is wrong with me.
Still interested in reading this article and finding out about handwriting problems in others.