It's a test of pattern recognition. The difficulties come from trying to apply similar measurements between disparate populations, as the questions themselves tend to rely upon common understandings of the world. You can measure two people from two different cultures with two different tests, but then it's more difficult to claim that the resulting scores are comparable. As long as people understand that it's a rough approximation rather than something akin to video game stats, then it's quite useful.

[–] BussyCat@lemmy.world 3 points 1 day ago

Even video game stats have the same problems though, your W/L ratio in free for all should be a lot lower than in team deathmatch, or if you are playing a support class it’s expected you get less kills per game so comparing a support player vs a fragger will get you errors but if you control for as many variables as possible then IQ can be a not complete shit variable