I think it's widely accepted that they principally measure the ability to do IQ tests.
I have a friend who got a 1st class honours degree in biochemistry, a Masters degree then a PhD, then worked up to become senior R&D manager for a major chemical/pharmaceutical company. But he couldn't do an IQ test to save his life.....
But going back to the "Test the Nation" results, the article says that the average IQ in the UK is 100, but the winning group (surgeons) only averaged 101, and every other group was below the notional national average. It's difficult to comment on this without seeing all the individual scores, but it would seem that either the tests/results were not properly "normalised" (for which read "fiddled"), or they just happened to pick a bunch of thickos to do the tests.
But anyway, the clairvoyants came last, quite a bit below the next group (removal men).
Q.E.D., I think.
M.
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