Thanks for the info aeh, interesting study. Of course now there is a form 7 of the cogat so who knows how it would compare. It does make sense that it would correlate more highly with the wisc since it measures more domains than the NNAT.
I did notice that the study I mentioned was written by the author of the cogat, which is important to mention. In his newsletter cognitively speaking, there are some bar graphs of stanine scores by different groupings, which I thought were particularly interesting. I always assumed that testing would follow a nice bell shaped curve and obviously that's not always the case. Granted these were not representative studies, so who knows if the original norming of the instruments were a bit off, or if the results just reflected the characteristics of the population being studied.
Catova, when my son took the test, the school gave us an NNAT2 "home report". It lists the "Naglieri ability index" and the percentile rank. There is also a nice bell curve with descriptors "average", "high average", "superior", "very superior" etc., and numbers below with a dot on the curve to indicate the score. There is no raw score or number attempted listed. His school had them take the test on the computer, so it's probably easier for them to print out that info for the parents.
