Thought experiment on link between culture and intelligence.

[Subfallen]

There is going to be an international lottery of sorts. Any country that meets the population requirements can enter. Here is how it works:

(1) Each country randomly selects 1,000,000 boys between 10 and 12 yrs old.
(2) Lottery officials administer IQ tests to the sample and take the 100 highest scorers into custody as a distinct "prize."
(3) The prizes are randomly reassigned new citizenship and residency, one prize per lottery country.

So, questions.

Do you think this is a zero-sum game? If not, what countries do you think would be +EV in this lottery and what countries would be -EV?

Would your answer change with a different age range? Say, 5-7 yrs?