Can her Gai be worked out on her higher scores, WMI & PRI? Does it need to be lower than her FSIQ?
No, GAI can only use the PRI and VCI scores. I believe that the thought is that VCI and PRI correlate more with g while WMI and PSI are less g related and more related to supporting skills that allow the child to show that intelligence.
A child with a 130 GAI and a much lower FSIQ due to low WMI and/or PSI will likely present differently than a child with a FSIQ of 130, for instance b/c the kid with the FSIQ that high has both ability and the horsepower to show the ability. A kid with a high GAI who lacks that horsepower might have a harder time showing what s/he can do due to slower speed in getting it out, organizational skills, or having a hard time recalling, if we take WMI and PSI at their face value of measuring what they sound like they are.
