My sister had IQ tests (amongst various tests because she wouldn't eat normally - this was the seventies) when she was an extremely young lassie of about 3.
The test results suggested her IQ was about genius level. The tester was made up with her and requested she come back for more, the results of which were not genius level. She was a normal child for her age.
The tester was really gutted. My mum offered her condolences, because my sister had been doing the exact same 'games' at her nursery for a good couple of months and no one had told the tester this.
Apparantly, the nursery nurses said they'd had a few erroneous results like this because the kids had been playing these games.
Ha Ha Ha. Not. Practicing doesn�t give an adult a higher IQ. It does give kids higher apparent IQs, though.
There have to be genius brains floating round the tribes in South America who love their lives as they are. They are problem solvers, helpers out of everyone around them and medics. But I bet they'd fail a conventional IQ test.
My IQ result has always been 138. The story of my sister�s IQ is a family tale we tell to all and one day she will tell me what it actually is. Whatever her IQ is, she is still a nicer, more organised and more caring person that I am.