Molly, the WISC-IV (the test I know best) factors in many different areas. And it doesn't have a true "nonverbal" area, but let's assume for these purposes that the PRI measures something along those lines. The WISC also has a working memory component and a processing speed, areas that even fast GT kids typically score slightly lower in.
So...while we are being TOTALLY hypothetical, here's a sample child that is very strong verbally, but with maybe more typical (gifted speaking) other scores.
VCI 138 (the ceiling here is 155, but I'll use your rough estimate here)
PRI 125 (there is no 124, so I'll round up)
WMI 126 (I'm being totally random here, just to give you some typical data on how the scores composite together)
PSI 126
THIS combo would FSIQ at 137. It's also worth noting that the GAI (a score that doesn't include WMI/PSI) would be 138 (this hypothetical child is pretty even keeled). Each score does affect the total, so raising any one score would in turn raise the FSIQ.
Thanks so much Dottie - that was exactly the example I was looking for. It gives me a general feeling of how the scores come together.
