My apologies for the double-post. I first added this to the end of a conversation where a couple of parents were contemplating re-testing kids, including one that would be going from the WISC to the SB5.
This article discusses the performance of gifted & highly gifted students on the SB5 in contrast to their performance on previous tests (the WISC-III in particular).
Any parent considering re-testing on the SB5 (especially after first testing with WISC) will want to read this. So will any parent who has already had a child take the SB5 in follow-up to a WISC and was a bit surprised by the outcome.
(Thanks to Dottie for the link to the full article.)
Gifted and Highly Gifted: How do they score on SB-5? A couple of pertinent snippets:
In contrast to the means on the SB5, which seem to be lower than expected, many of the age-equivalent scores appear to be higher than one might expect. The proportion of children that received age-equivalent scores beyond the highest average score for mature adults (19% of gifted students and 40% of highly gifted students) seems implausible even after taking into account documented cautions in interpreting such scores (Sattler, 2001). If these age-equivalent scores are indicative of actual functioning, it seems curious that they are not accompanied by correspondingly high IQ scores. In sum, these scores appeared to be of minimal use in accurately describing levels of giftedness in our sample.
and
Another interesting finding is that some individual's scores varied dramatically between the two intelligence tests (as much as 35 points). Two students in the highly gifted program scored so low on the SB5 that they would not meet intelligence test criteria for giftedness even if the cut-off were lowered to 115. Alternatively, several students who scored at the low end of the IQ cut-off for our gifted program did very well on the SB5 and scored within the range of the study completed by Riverside on child prodigies.
