My ds was tested using the wppsi-III when he was 3.11. Because the norms for this test start at 4.0 i'm wondering if his score may be an underestte and if so how much?
I was also told that "another version" of the wppsi that could've been used and goes up to 3.11 wouldn't have given as much information but i'm wondering how his scores would've compared. My understanding is that the younger version uses less subtests but they are actually a subset of the older test. Is there anyway of calculating a fsiq from these subtests?
