I wonder what's happening when you pull away the visual? I know with my ds7 he's still "seeing" that visual when he talks, because sometimes he does air writing to help himself figure out what he's saying. It's still frustrating for him, of course, because I feel like he's a nonnative English speaker who has to consult the ds7-to-English dictionary in his head every time he speaks a sentence longer than 5 words.
But I think it's noteworthy that your son loses that connection when he loses the visual.
Yes... me too. I wonder if it's a working memory thing, because of the ADHD (I go back and forth with that... some days I think he definitely has it, and others, not so much).
But consider this... DS does mental math. He hates showing his work (I think his fine motor issues make it hard) and does things in his head. He recently got 8/16 on a math test - he got all 8 answers correct but he lost the second mark for each one because... no work. All in his head.
