In DD's case, I am certain that the reason she didn't talk early was a fine motor skill issue. In terms of receptive language, she was very, very advanced, and she was obviously trying to talk very, very early, but she couldn't always get the right sounds out at the right time.
My DS13 says he remembers how difficult this process was, and how dissapointing it was that he couldn't always produce the sounds as he intended them to be. Isn't that sweet?
I think that various 'body systems' come on at different times so that speech or reading won't fit with the rest of the levels picture. Remember that Ruf didn't test 10,000 gifted kids to make her levels. ((Anyone remember exactly how many?)) I expect the levels to be more accurate when more kids have been tested. I would use them more to document 'at least this gifted' than to 'rule out' giftedness.
Grinity
