I’m not saying employers would hire solely based on IQ. That would be crazy. It’s just a screening measure. But so is educational attainment. Nobody gets hired because they have a college degree, but plenty of people don’t get hired because they lack a college degree.
Also, agree that educational attainment gives you more information about a candidate, but in terms of assessing intelligence, it is a coarser measure than IQ. I’ve hired a few people in my day, and there is huge divergence in intelligence among college grads. For lots of jobs it is useful to be able to distinguish between not-stupid, bright, and ridiculously smart. Educational attainment doesn’t really help with that, but IQ tests would.
Also, agree that educational attainment gives you more information about a candidate, but in terms of assessing intelligence, it is a coarser measure than IQ. I’ve hired a few people in my day, and there is huge divergence in intelligence among college grads. For lots of jobs it is useful to be able to distinguish between not-stupid, bright, and ridiculously smart. Educational attainment doesn’t really help with that, but IQ tests would.