I don't set interviewing policy at my company, and anyway I'm unfamiliar with any technique that provides better results. I suppose finding it is a direction of

I don't set interviewing policy at my company, and anyway I'm unfamiliar with any technique that provides better results. I suppose finding it is a direction of research that would be interesting, but I have a full time job just being an engineer. My comment is only meant as practical advice to candidates. It is not normative.