Gifted Issues Discussion homepage Forums Identification, Testing & Assessment wisc-iv extended scores vs. stanford-binet l-m?

I'm reading Miraca Gross's book _Exceptionally Gifted Children_ (on advice from this discussion forum, I think). Her subjects have IQ scores of 170+. Given the original publication date of the book, I assume that many of these numbers were from the old Stanford-Binet L-M.

I recognize my DS9 in some of what she writes, but not in the test scores. I've read that SBL-M scores are often higher than what the same kids would score on today's tests. So I'm left wondering how to compare DS's WISC-IV scores to these older numbers. (I don't think I'm trying to be competitive on my son's behalf, but I do want to know whether it is meaningful for me to be reading Gross's book, or if her subjects are at some level of giftedness that doesn't really apply for our family.)

So my specific question (probably for Dottie) is this: are the wisc-iv extended norms roughly comparable to SB L-M scores? I've got numbers for FSIQ, Extended FSIQ, GAI, and Extended GAI. DS's Extended GAI gets close to the low end of Gross's subjects' numbers, but is still below.

I know that above a certain level the numbers become pretty meaningless, but these test results are new enough for us that I'm still a little fixated on trying to understand what they mean. The only convincing argument in favor of continuing to use the L-M test is that I've seen is that it provides some kind of continuity with 50 years of prior research and literature on giftedness...

Did you ask the person who tested your DS if he/she was familiar with the SBLM? Our tester had given many of the SBLM tests, and thus was able to give a pretty good estimate of what our DS's SBV score might have looked like on the SBLM. She did this so that we could make sense of the literature we were reading.

st pauli girl,

I suppose I could just ask him that. He did say that he does not agree with those in the gifted testing world who still administer the SBLM. I'm guessing that he is not old enough to have been trained on the SBLM, himself, but he might still be able to give a comparison.

Our tester does not use the SBLM anymore. Here is an interesting article on the current use of the SBLM: http://www.hoagiesgifted.org/current_use.htm (I guess "current" is stretching it; this appears to be from 1997, before the SB-V.)

Unsure if a tester without prior SBLM experience would be able to make a prediction unless there's some mystery charts out there that only psychologists have....

Ooh - I forgot that they had achievement scores in those books. DS did his achievement stuff well after I read those books. That will be fun to go back and compare achievement numbers.