I am not an expert at all, just a 25 year old girl who has an LD herself (with a similarly atrocious PSI) and has been tested and so knows this test and has an idea of what it might indicate. If you definitely don't see an indication of any sort of LD and he is doing great and doesn't have any weaknesses in any academic/cognitive areas, then I would not put much stock into 2-3 lower subtests. The two processing speed subtests together probably took a total of 6 minutes (and that includes the sample demonstrations, etc). The parts that actually count for the scores probably took a total of 4 minutes. Thus these two low scores might just be an unfortunate fluke. Also keep in mind that this profile: VCI>PRI>WMI>PSI is common in higher IQ kids in general.
As for your question about the SB5 testing, I have no personal experience or any idea about this test at all. However, I've heard that it places more focus on visual-spatial, whole-to-part, simultaneous thinking as well as quantitative reasoning with less focus on verbal reasoning so whether or not SB5 will yield a higher overall score depends on his strengths and weaknesses. However, if I were to guess, I don't think SB5 score would be higher as your son's strengths seem to be in verbal reasoning and language (which is my case as well). Also, I read that SB5 usually produces lower overall scores than WISC IV. However, an old version SB-LM which emphasizes verbal reasoning produces higher scores than any current (more comprehensive) IQ test.
Last edited by asiral; 03/03/10 05:57 PM.
