It looks generally redundant in most cases to me: Given how pervasive IQ-correlations are, I think most people can get a reasonable estimate of their IQ by observing their life history so far. E.g.
Educational achievement
Performance on other standardised tests
Job type and professional success
Peer esteem/reputation
Obviously, none of these are perfect signals, but I think taking them together usually gives a reasonable steer to a credible range not dramatically larger than test-restest correlations of an IQ test. An IQ test would still provide additional information, but I’m not sure there are many instances where (say) knowing the answer in a 5 point band versus a 10 point band is that important.
The case where I think it could be worthwhile is for those whose life history hasn’t generated the usual signals to review: maybe one was initially homeschooled and became seriously ill before starting employment/university, etc.
It looks generally redundant in most cases to me: Given how pervasive IQ-correlations are, I think most people can get a reasonable estimate of their IQ by observing their life history so far. E.g.
Educational achievement
Performance on other standardised tests
Job type and professional success
Peer esteem/reputation
Obviously, none of these are perfect signals, but I think taking them together usually gives a reasonable steer to a credible range not dramatically larger than test-restest correlations of an IQ test. An IQ test would still provide additional information, but I’m not sure there are many instances where (say) knowing the answer in a 5 point band versus a 10 point band is that important.
The case where I think it could be worthwhile is for those whose life history hasn’t generated the usual signals to review: maybe one was initially homeschooled and became seriously ill before starting employment/university, etc.