[kadkadels]

It does affect concentration and if an IQ test goes on for long enough and is not interesting enough to warrant some kind of hyperfocus, I get distracted. And so my IQ score will be worse. Or not? I have ADHD and it doesn't make me dumber, but since focus is a critical part of thinking, it does make it harder if I'm not interested. I'd rather say that IQ tests are designed for neurotypical people.

[bryanrasmussen]

I have ADHD and I do great on IQ tests, each question is a little thing to answer, I move quickly through them and get a quick dopamine hit. If there is something difficult then I can get stuck there and thrown off my rhythm, but this seldom happens.

[sph]

IQ is not concentration. In fact, IQ or intelligence in general does not have a single accepted definition†. You are not "stupider" because you have no patience to sit down to concentrate to do a silly test. Nor you are "smarter" because you found it so engaging you hyperfocused and did it in one sitting.

IQ tests are designed by people that want to create automatons easy to quantify and categorize.

† My definition of intelligence is "ability to solve novel problems." With this definition, an uncontacted tribesperson can be as intelligent as a Nobel prize winner. The difference is education, and the type of problems they're facing, which is just a matter of context.