Gifted Issues Discussion homepage Forums Identification, Testing & Assessment C CAT

Suspect scatter is pretty common around here. And that non-verbal may be a particularly visual-spatial measure, which is a different ability than the other two.

For what it's worth, in the WISC DS's three PRI subscores differ by 1.5 and 3 standard deviations from lowest to highest, and those actually are expected to correlate somewhat...

Good to know, Michelle. I hear you about scatter...this child debates like an teen but has the printing of a 4 year old. Was reading through Aquinas' link looks like 40% of students have this sort of profile.

Don't know if you're in Ontario, but I hope you're getting some sun in your area this weekend. It looks like spring has finally sprung here.

eyreapparent, PM'd you. Cranking up the BBQ!

93rd percentile is still a good score and it's definitely not unusual to score worse on one section of the test. The degree of difference in the scores depends on how high those 99 percentiles are. A standard age score of 136 and a score of 160 are both 99th percentile. 93rd percentile is probably around a 123.

I wonder how different the norms are for Canada vs. the US.

I think my DS had similar scores, (2 scores around 98th-99th percentile and one around 92nd percentile) except that his lowest score was verbal ability, and the test report said that all of his scores are similar and he is "profile A". He always tests 99th percentile for above-level reading comprehension tests, but he had a similar (larger) gap on the WISC when he was younger, with verbal being lower. His overall composite on the CogAT ended up still being 98-99th percentile, I think, even with the one lower score.

93rd %ile is 122
99th %ile is 133+
if x = 100 and SD = 15.

I believe CogAT/CCAT have SD = 16, in which case
93rd %ile = 124
99th %ile = 135+

93-99 is only mildly significant if it's the smallest possible SAS difference.

Thanks for all of this info. I'm trying to get a hold of her actual scores. I know they've put DD on the agenda for the next In School Review Committee to set up further testing.

Honestly, this board is more informative then some of the admin at the school!

Michelle, PM'd you!

Finally got his CCAT scores from the school as well as new WISC scores that we went private for.

I'll PM you the details for other interested readers our DS had CCAT scores were much lower than his WISC scores. He is 2E (written expression LD).

ETA - actually looking more closely I guess the CCAT composite score does match his FSIQ so maybe that is a good sign. It is just that in our case DS has REALLY low PSI so his GAI is much, much higher than his FSIQ and there isn't really anything in the CCAT that reflects that.

I was also really surprised that the CCAT Verbal score didn't seem to match his VCI score on the WISC. (95 vs >99.9) I would have thought that they would be similar but I'm far from an expert on this stuff.

I can't speak for the CCAT but it sounds like it's similar to the CogAT. On the CogAT a kids standard score can go way down just by missing a few questions. So if he was simply unlucky and got a few vocabularly words (or whatever) that he doesn't know, that could have brought down his score. To get a 99.9 percentile on the CogAT it has to pretty much be perfect. There is a low ceiling.

The CCAT is the CogAT, just with Canadian norms.