Of the dozens of people who took the KAMIKAZE, at least 14 have self-reported math SAT scores. Some people took the KAMIKAZE before an answer key problem with the Dice item was corrected and so, for the purpose of the norming, I corrected the scores of those who were unfairly penalized so the norming would reflect the corrected version of the test.

I also deducted a point from those who were unfairly boosted by a brief scoring error (when I added a research question for comments, this added a point to everyone taking the test until I quickly spotted the problem & corrected it). With these corrections in mind, here is the raw data:

In my first norming, I converted all math SAT scores to the pre-1995 scale and then converted to IQ equivalents using 1980s norms but that seemed to produce inflated results, especially at the low end. This time I converted math SATs to IQ equivalents directly, using estimated means and SDs for the time period.

To get IQ equivalencies for the KAMIKAZE, KAMIKAZE scores and math IQ equivalents were both ranked from highest to lowest and equivalent ranks were equated:

The mean and standard deviation of the KAMIKAZE in this sample is 7.9 and 3.8 respectively while the mean and standard deviation for SAT derived math IQ is 134 and about 11. The relationship between raw scores and IQ looks fairly linear, so one can probably just use the following equation:

IQ (U.S. norms) = (KAMIKAZE score)(2.79) + 111

If this extends to the extrne a score of 0 would put you around the level of the average American university grad. A perfect score of 17 out of 17 would put you just below Prometheus level.

One red flag is the correlation between KAMIKAZE scores and math SATs is 0.0005. Technically this calls into question the whole logic of using math SATs to norm KAMIKAZE scores. However the correlation jumps to 0.43 when I remove everyone who took the old (pre-1995) SAT from the sample. This makes sense because old SAT people have the highest SAT derived math IQ scores because they took the test back when it had as huge ceiling, and yet because these people are now oldish, cognitive decline impairs their KAMIKAZE scores.

To adjust for age, I would advise readers to give themselves a bonus of 0.17 IQ points for every year over 30.

Next, I ranked the items in order of difficulty based on the percent of this norming sample to pass them.

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