> 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.
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.