IMHO, it's a bad idea because it casts doubt. An IQ test gives feedback that's concrete, yet inaccurate. Perhaps a better test would be to draw something to the best of your ability, image stream for 10 minutes, and then draw something else. If the second drawing is better, you know IS works. If it's not better, it's probably at least as good and you can shrug it off--that's what NOPS is all about. If you think that test is too right-brained, make another one up, like translating a foreign language before and after IS...who knows.