The thing that gets me about IQ tests and kids is the obvious variability with the tester. I can guarantee you that some testers would get good results with my DD and others would not. She will give up easily in some moods; if she doesn't "get" something right away, she's inclined to just tank it or say "I don't know" or "Never mind."
This reminded me of something that happened with our ds when he was 5 - it wasn't on an IQ test, but on a kindergarten pre-admissions test given by a private school. The test was *easily* things he knew - really *really* basic kindergarten readiness questions. While I was in a different room filling out a questionnaire that asked me to tell about my ds and I was writing long paragraphs about how smart he was, the type of deep intellectual questions he asked, the amazing engineering feats he'd performed, waxing on about how I was hoping that he would be given intellectually challenging curriculum in kindergarten etc...
... my ds was in the other closed-door room with the kindergarten teacher answering every single danged question she asked "I don't know". Ack!
When the test was over and I was handing over my "my son is brilliant promote him to 2nd grade or he'll be bored to tears" parent form (ok, it was much nicer than that lol!)... the kindergarten teacher was shaking her head sadly telling me she really *wished* she could tell me to hold him back for another year because he clearly wasn't ready for kindergarten and she was pretty sure he would be lost in her classroom...
On the ride home when I asked ds why he'd answered every question with "I don't know"... he, of course, replied "I don't know".
polarbear