The problem that you continue to fail to grasp, DSeid, is that the waist size:pant size analogy assumes a relationship between intelligence and boredom, tedium or whatever term you want to use.
Think this through. If I have a large waist, there are some pants that are so small I will physically be unable to wear. Are you arguing that if I have a large IQ, there are some tasks that are so cognitively unchallenging that I will be unable to do them?
Or, do you have to introduce another variable, and assume an associated relationship between that variable and intelligence to explain why unchallenging tasks would be more difficult if my IQ is higher?
I agree that some people are likely to struggle if they perceive a task as unchallenging. I contend that others are not likely to struggle with a task even if they find it unchallenging. I contend that this is independent of the differential between intelligence and task challengingness. I contend that whether or not people will struggle is explained by a separate factor, independent of intelligence. This factor is the ability to tolerate downward differential in challengingness of task relative to intelligence. As shorthand, I’ve been calling it boredom, and proness to boredom is an existing construct within the literature.
As evidence of this, I point both to the empirical literature and also to the fact that most gifted students do not actually end up failing the typical school curriculum.
I also think it’s kind of offensive to suggest that people who are less smart will naturally have a more positive experience with more menial tasks. Do you think the janitors in your building are necessarily stupid?
In fact, this whole line of reasoning is anathema to the effort to minimize the meaning of IQ as overly reductionistic and devaluing of the complexities of individual people. You see the irony, right?
As for the whole “Western” nonsense, of course a particular measure and stardard score has value only within the culture it was normed for. It wouldn’t make sense to judge the relative IQ of people based on their knowledge of the meaning of “lachrymose” (not actual test content to my knowledge) if they don’t speak English. However, intelligence and the process of measuring IQ are the same across cultures. It would be silly to think otherwise.