I received the full report, and I'm perplexed. It's been a long time since I studied statistics, and I know little to nothing about intelligence tests.
I have T-Scores, Percentiles, and Age-Equivalency for several subtests.
First, both kids had some T-Scores of 90. DAS-II's proprietor states that T-Scores range to 90 on the School Age version. Does a T-Score of 90 actually mean that they hit the ceiling on the subtest?
Second, I'm thoroughly perplexed about the results on my son's Matrices subtest: Age-Equivalence = 15 years, 9 months; T-Score= 75; Percentile=99. My confusion results because other subtests had even younger age equivalences, like 13 years+ or 14 years+, but each of these had much higher T-Scores and much higher percentiles (well, 99.9+ as opposed to 99.)
How can his age equivalence be appreciably larger on the Matrices than on other subtests, yet produce a markedly lower T-Score and percentile?
Thank you for any insight!
