For the IQ question, you should clarify what level of precision you’re after. Exact results or rounded ones? Only from professionally-conducted tests, or not? Include ones taken in childhood, or not? And, though you hardly need this pointed out to you, whatever form the question ends up taking you should expect substantial sampling bias in the (non-blank) answers.
For the IQ question, you should clarify what level of precision you’re after. Exact results or rounded ones? Only from professionally-conducted tests, or not? Include ones taken in childhood, or not? And, though you hardly need this pointed out to you, whatever form the question ends up taking you should expect substantial sampling bias in the (non-blank) answers.
In the U.S., more of us will probably know our SAT or GRE scores. We could also ask about G.P.A.