My 2 year old son has a really good memory - if we pass streets where friends live, he'll recognise them; he recognises people in photos after seeing them once etc
He'll also remember when we've messed around and put baskets on our head, or hung things around our ears - and it seems like all of his imaginative play is based around what we've done together and what he remembers. Very little, if any, comes from him. And in fact, he doesn't really do much imaginative play at all. Messes around in his kitchen sometimes.
So I think he uses memory a LOT in learning and playing - even with shape sorters etc - is this typical for NT children?
I've got experience of working with non NT/SN children, but not with NT (first child).