When I interview a candidate, I'm explicitly and intentionally looking at how they respond to stress, how (if) they're able to say "I don't know", and how they communicate complicated ideas. I open with soft-balls to put them at ease and get them opened up and talking. Then dive deeper into technical things. All the questions are technical, but the main answer I get is how they communicate, how they relate to people, and how they deal with the unknown.

If you understand that a technical interview assesses anxiety, and you roll that into the plan, if you know what the game is, then you're 1/2 way to a win-win already.