Ah, but!
If a shuffling, shy, unconfident, late, trembling, muttering, ill-dressed, dirty shoed shambles walks in, and doesn't shake your hand, you are going to base your impression upon those traits as you "count them as important". Personality type questionairres are the quantifiable management equivalent of those things you do. Only based on a thin veneer of science. They are nothing more than a pseudo-scientific, and playing field levelling system for assessing applicants. Let's face it, if the shambles I described was unseen to you, you would not be able to judge them because they don't meet your personal standards, you would have to take them on their answers, not their shoes.
You need skills to discover why the person is a shambles, what questions would you ask to find out? Probably none, because they are a shambles and won't 'fit in' with your ethos. That may sound like a criticism of you, but it's really not, it's just human nature. I've interviewed people, and decided they were not getting the job before they even sat down! On one occasion because it was obviously an 'interview suit', and I was not sure how he would really dress, and didn't want to find out on the first day! We decided that another candidate would get the job, because as she crashed through the door like Mr Bean, she laughed, didn't apologise, but immediately asked, with a lovely smile, if she could have 2 minutes to compose herself.
I'm a head-shrinker though!