I know that this is a very old post, but anybody claiming that inclusion in the extended norms sample required 98th %ile in VCI and PRI, a 99.9th %ile GAI, and a ceiling raw score in at least one subtest is clearly having you on. According to Technical Report #7, norming data came from both the original standardization sample and data provided by the NAGC. NAGC data included a VCI of 110, PRI of 102, FSIQ of 118, and GAI of 120. Even the subject of the case study provided with the report (with a GAI of 208, although the reliability of norming data is likely quite dubious in that range) did not attain the maximum raw score on any subtest.
Last edited by Anisotropic; 06/21/19 11:43 PM.
