Jonathan Littman and Marc Hershon, authors of I Hate People have come up with one of those unorthodox Interview Tests that could give you insights (non-technical though) into the personality of the individual.
“Observe how the candidate crosses the street”
And honestly, my experience so far with hiring, is that Attitude is all that matters! Skills can be acquired, but attitude is a “if-and-only-if” condition!
I am a wader…who are you?