During my interview I was asked by one of the three people interviewing me that I would be required to take an IQ test after the interview. I was a bit shocked as I was never asked this during any other interviews I've been in. How common is this?
It is more common at workplaces, where required education level is below college. The knowledge area is very wide to cover, and an employer may wish to employ someone who shows certain skills, but without interviewing every candidate beforehand. Recently I heard this to occour at financial positions for a local country bank.
By the way, the positions I have applied so far (required minimum college level), more or less included some logic test but during the interview. So it is still coming up, but not in a mass-tested way.
Do you mean a formal IQ test, or just a couple of questions that are sort of like an IQ test?
I've never been asked to take a "real" IQ test for a job, nor do I recall anyone I know saying they had.
I've had a few job interviews where they gave me some sort of quiz. I don't recall ever being asked IQ-test-like questions, but the idea that someone would include a few in a quiz seems less unlikely to me.
So: I don't have any statistics, but my own anecdotal experience is: never. As others here seem to be saying the same, yeah, I'd say it's pretty rare.