Yes! In my case I think it's because DS _does_ act younger with me than with other people. My MIL often sends me emails of clever things he said when he's with her, and I always think - why doesn't he say that when I'm around??? LOL
With me I think he feels free to 'let go' and so what I get to see is all the sensory-seeking behaviour that appears very juvenile.
Also, when we did the vision testing recently I was made aware of just how much he must be compensating intellectually on a minute-by-minute basis for his visual and DCD issues. I think it uses up a lot of his mental capacity and so the good stuff is hidden.
