Hmmm. I have issues with the WISC-IV. My son didn't score as gifted and the psychologist couldn't even calculate his IQ, yet he was ahead in a few areas as well. We haven't done a SB for him (I'm kind of disenchanted by the testing process for kids, to be honest. I wasn't tested until adulthood, and frankly I think there's more accuracy then). Also I've heard that the WISC is only good to about IQ 130 and anything higher is better served with the SB.