Thanks for all of the responses- good to know that I'm not alone. I've read that parental IQ is related to child IQ (inherited), but it's not necessarily a direct relationship. Gifted parents can have NT kids and apparently, NT parents can have gifted kids.
My DH and I are both intelligent- maybe more than we know (we both had kind of rough childhoods). Our son is just "different' in ways that we've had some trouble understanding- beyond intense in drive, emotional responses, and intellectual interests. Neither my DH or I ever fit this category, although we probably slipped in and out of it. My father maybe, but he likely has some ADHD/learning issues that were never addressed.
As I said, most of the time I take DS as he is and have adjusted to his intensity and constant questioning/thinking. It's when he develops passions that are so different from my own that I begin to wonder if I can keep up:)
