I like your description of the 3 things you want to evaluate. It is pretty similar to what I try to evaluate. The first two are part of a quiz we give candidat

I like your description of the 3 things you want to evaluate. It is pretty similar to what I try to evaluate. The first two are part of a quiz we give candidates, it has a couple basic questions on it that simply require them to logically think through a problem they likely haven't seen before and provide feedback. I don't even care if the answers are correct, but they should be able to explain their thought process and reasoning clearly in a couple followup questions. Bonus points to candidates that ask for feedback on their answer. For the last point, during the interview I get the candidate to describe a project at a recent workplace, once they have given the description, I'll ask questions to see if they evaluate and learn from their previous work. I am constantly shocked at how many candidates I interview that fail one or more parts of this spectacularly (especially senior level candidates), to the point where I question whether evaluating candidates these ways is unfair, but also knowing that if someone doesn't do this they likely are going to fail when given a problem without an obvious answer.