Why the hell do you people know your IQ? That test is a joke, there’s zero rigor to it. The reason it’s meaningless is exactly that, it’s meaningless and you wasted your time.
Why one would continue to know or talk about the number is a pretty strong indicator of the previous statement.
You're using words like "zero" and "meaningless" in a haphazard way that's obviously wrong if taken literally: there's a non-zero amount of rigour in IQ research, and we know that it correlates (very loosely) with everything from income to marriage rate so it's clearly not meaningless either.
The specifics of an IQ test aren't super meaningful by itself (that is, a 150 vs a 142 or 157 is not necessarily meaningful), but evaluations that correlate to the IQ correlate to better performance.
Because of perceived illegal biases, these evaluations are no longer used in most cases, so we tend to use undergraduate education as a proxy. Places that are exempt from these considerations continue to make successful use of it.
This isn't the actual issue with them, the actual issue is "correlation is not causation". IQ is a normal distribution by definition, but there's no reason to believe the underlying structure is normal.
If some people in the test population got 0s because the test was in English and they didn't speak English, and then everyone else got random results, it'd still correlate with job performance if the job required you to speak English. Wouldn't mean much though.
> we tend to use undergraduate education as a proxy
Neither an IQ test nor your grades as an undergraduate correlate to performance in some other setting at some other time. Life is a crapshoot. Plenty of people in Mensa are struggling and so are those that were at the top of class.
Do you have data to back that up? Are you really trying to claim that there is no difference in outcomes from the average or below average graduate and summa cum laude?
That is moving the goal posts. No one claimed it is the sole predictor. The claim was that there is no relation at all. Your own links say their is a predictive relationship. Of course other factors matter, and may even be more important, but with all else equal, grades are positively correlated.
It’s about trend. Not <Test Result>==Success. These evaluations try to put an objective number to what most of us can evaluate instinctively. They are not perfect or necessarily fair. Many, maybe most, job interviews are really a vibe assessment, so it’s an imperfect thing!
I don’t know my IQ, but I probably would score above average and have undiagnosed ADHD. I scored in the 95th percentile + on most standardized tests in school but tended to have meh grades. I’m great at what I do, but I would be an awful pilot or surgeon.
Growing up, you know a bunch of people. Some are dumb, some are brilliant, some disciplined, some impetuous.
Think back, and more of the smart ones tend to align with professions that require more brainpower. But you probably also know people who weren’t brilliant at math or academics, but they had focus and did really well.
For me it was just a coincidence of MENSA advertising their events in my high school and being pushed by a couple of friends to go through testing and join together.
I guess if you're an outlier you sometimes know, for example the really brilliant kids are often times found out early in childhood and tested. Is it always good for them ? Probably not, but that's a different discussion.
Why one would continue to know or talk about the number is a pretty strong indicator of the previous statement.