[nosseo]

So the thing is, I think arrogance is typically reflected in actual deficiencies in interview performance. If it isn't - if it's just a vibe that the interviewer got with no concrete implications for how they work with others, solve problems, or communicate - then I worry taking it into account is introducing bias. If I can't think of a concrete implication that the arrogance had, then I don't think I want to take it into account. (You almost always can identify concrete effects, though.)