The Head at my DS' school said to me once "you can tell how bright a child is, by their vocabulary!!" Ds is in the gifted group for maths, on top level for reading, he is 7, BUT he has Crebral Palsy, he didn't talk till he was nearly 4, his speech was delayed by over a year up until last year when he finally caught up, so for the Head to say that to me, made me so proud!! Even if he doesn't shut up now!!