I am looking for input regarding how Reynolds compares to WISC IV. This is for my oldest who has taken WISC a half dozen times over the years (complicated medical history) but was administered Reynolds for the first time recently. Obviously, I am very familiar with WISC but have limited knowledge of Reynolds. It looks like the CIX on the Reynolds which combines the VIX and the NIX is comparable to GAI on the WISC which combines VCI and PRI but how well do they correlate? It appears that the VIX like the VCI represents crystallized knowledge whereas the NIX and the PRI represents fluid reasoning but do each measure their respective areas equally well.
There is a Composite Memory Index on the Reynolds which is not incorporated to form a FSIQ equivalent. How comparable is that to the WMI on the WISC? There was no processing speed measurement and the psychologist indicated that Dr. Reynolds felt that it was not useful to combine processing speed with the other measurements. She also indicated that the fluency measures on the Woodcock Johnson Achievement would tell you what you need to know regarding processing speed.
