I thought that IQ test was screening test, pre-phone interview. But no, they had me redo it at the onsite interview too. The funny part was the onsite test had the exact same questions as pre-phone interview.
edit: typo
I remember doing it too. I was at work in a meeting and they have instructions saying something to the tune of finding a quiet place and all of that, but my thoughts were if they are serious about this, then solving these abstract problems is something I'll have to be able to do while under pressure or under the heat of conversation.
Long story short anyway, I'm not intelligent enough to work there I guess, so good thing they used that test to screen me out and make sure I knew. It does have a little bit of merit with the very quick no versus the long, drawn out no. I recently interviewed at a great company, 4 1-1 interviews, a presentation/demo I had to make to present to 7 other people, etc. and I think another interview after that and I'm just over it.