I didn't realize you were using the WISC-V table - sorry there!
I was under the impression that the extended norms would have been released by now given the timeframe mentioned by Pearson (see bottom of this post). I may actually end up consulting with DD's educational psychologist once the extended norms are released. If they do push her FSIQ upwards in any significant way (a big 'if,' I know), I would possibly be willing to see if she could participate in research on the subject.
Q: When will extended norms be available for the WISC–V?A: Extended norms are used by practitioners who are evaluating intellectually gifted children, to inform interpretation. Extended norms must be validated with a sample of children who are highly intellectually gifted, and that case collection takes some time because these children are rare. The validation sample is currently being collected. The WISC–V was released at the beginning of December, 2014, and the extended norms are planned for release approximately a year and a half after the initial release of the WISC–V. (source:
http://www.pearsonassess.ca/content/dam/ani/clinicalassessments/ca/programs/pdfs/wisc-v-cdn-faqs.pdf)
