My son is 4.5 and we had his IQ tested in January. I have read that IQ testing this young can give low scores because the child becomes tired before reaching the test ceiling. I'm curious if anyone has had their child tested in early childhood and then later and if you'd be willing to share the different results. Just curious, really. Thanks!

My son was tested on the WPPSI-III at age 4.5 and on the WISC-IV at age 6.5. The results were within 2 points of each other.

My son was tested on the WPPSI-III at 4y10mon and on the SB-V at 7y8mon. The results were within 2 points of each other as well (like CathyA). HTH.

That's very interesting considering that two different tests were used!

My sister once told me that her kids' school had said that early IQ tests are generally [/i]higher[i] (I think they said "inflated") than later results. I asked her for more information, but she didn't know anything more or the source, etc.

I have one DS who tested high on IQ test at age 5 (156), and now doesn't test startlingly well on SATs (which are supposed to correlate). I don't believe his IQ has decreased, but think that he's a slow reader (as am I).

I think early scores are just more wildly variable. I think some kids may test low because even with great "g" (whatever that is ), the kid is too jumpy, unfocused, and distractible to give the best performance. But similarly, a young kid who is really great at focus and paying attention may score high since many 4 yo couldn't do that in the test situation and all these scores are comparisons to norms for age. Since most 9 yo can focus for the duration of a test and understand to pay attention and take it seriously, there is less variation from focus and the score better reflects what the test purports to measure. But a brilliant 4 yo who is focused on the next snack and the pretty tree out the window may not show the brilliance at 4, but may show it at 8.

FWIW, I've seen a lot more scores that dropped from preschool age to school age than stable ones or ones that got higher later. I wish there was a good study actually looking at this, but I've never come across one.

Momx2, the stability of your DS scores across time and tests seems to validate both his PG-ness and the tests themselves. With that stability, I could almost believe they are measuring something real!

Hi All, We were in a similar boat in that both sets of scores were good but the first set was out of date for some of the programs we were seeking (older than 2 years). I see no need to test IQ again for this child. I, too, was surprised by both the stability and the consistency of the sections that were high (WPPSI-III P and SBV NV) as well as the FSIQs. Anyway, I tend to view all with a grain of salt since potential doesn't necessarily equal performance or success. If there were a magic pill for motivation - that would be something I would be interested in!
Interesting thread...

My DS8 was tested on the WPPSI-III at age 4.2 and WISC-IV at 6.2.
There are 18 points difference between them.

Botchan, which one was lower?

The WPPSI-III was lower.