"proof that the results do accurately correlate with investors' behavior."
Ok, so they have proof that if you ask someone rate your risk tolerance from 1 to 100 and they give you a number that this number correlates with their willingness to take risk.
Of course it correlates with their behavior. My point was the questions were so direct and obvious that they might as well have just asked you pointedly how risk adverse you were and posted that as the result.
Anyway, the snuggie, which is basically two holes cut into a blanket has made 10s of millions of dollars, so I guess you can sell anything nowadays.