[headsonpikes]

An IQ of 180+ is uncommon, but not rare. IIRC, that's about the 5 S.D. point, which would mean that the approximate percentage of the population above that level would be .02.

That's not much, but it includes over 50,000 Americans.

[rb22982]

Are you sure? I thought a S.D. was 10, not 16 (at least off the scale I learned in AP pysch a few years back which I do not remember the name of) which would make it 8 S.D. away.