This is exactly where biases creep in to evaluation. It's really, really hard to assess these signals objectively, and not use them to justify your snap judgements or prejudices. So maybe when the guy with a college sports background and a military-style buzz cut talks about how 'the team' did stuff, you mark it down as a sign of being a great team player and sharing credit. But when a guy with long hair does it, you assume he didn't make any individual contribution. And if a young woman talks about 'I' did stuff, you interpret it as confidence and evidence of personal contribution, but an older lady with kids does it and you dig in hard for evidence she's taking credit for others' work. Not personally accusing you of these specific biases here - just trying to show how these vague 'personality' judgement signals can be unconsciously misjudged by an interviewer, without them even knowing that's what they did.
