I don't think it necessarily makes the test as in the tester's delivery suspect. It might be an outlier, but I'd more strongly think the SBV itself is suspect. We had glowing reports of curiosity and inquisitiveness about our DS7 from the tester. She also mentioned he was very confident, but his typical M.O. is to take a wild (confident) guess first then apply more reasoning if needed (of course an IQ test doesn't support that.) It reads confident but spoils the results for some testing.
His results were quite similar except his low outlier was in VS rather than QR. And none of it matched other testing he's had (except I anticipated the NV and VS being lower because of his vision problems.) If you have the option to use an alternate IQ, I'm considering the WISC IV for my son, but the SB5 (and some writing problems) messed him up for the HG program this year.
