You don't need a formal definition, you just need to read more carefully: > it's just to say that if you had no other information, and you had to hire based on

You don't need a formal definition, you just need to read more carefully: > it's just to say that if you had no other information, and you had to hire based on just one piece of information, IQ would be your best bet. You might prefer to know if they have a medical degree, but that knowledge is already excluded.