Good link, kmbunday, it's nice to know Terman was aware of the problem with the wagging tail.

To illustrate part of this numerical problem with an IQ, SB5 used a normative sample of 4800 people. Which gives about a 50% chance of the sample including 1 person with an IQ of 150 or above. And to make the sample even more hardly relevant for HG+ kids, it includes a full range of ages from 2 to 85.