[peritonlogon]

Based on Internet IQ tests, which I know aren't really reliable, however, compared to most IQ tests administered before 15-20 years ago they're probably more reliable, My IQ has varied from 160 to 138... that's 22 points, or varying by 11, nearly 1 standard deviation (which is 15 or 16 points depending).

BTW the case of natural selection is pretty minor. And the fact that IQs have been increasing at an average rate of 3 points per decade (the Flynn effect) shows pretty clearly that something other than race and natural selection is at play with IQ test scores.