I recently interviewed 7 candidates for two different professional biologist positions in a state government agency (in USA). Of these candidates (all males), only one wore a suit. None of the others wore a tie. One came to the interview wearing an untucked sport shirt and jeans, another wore a flannel shirt, jeans, and scruffy cowboy boots. The most casually-dressed candidates were applying for internal promotions and may have thought this was a low-key affair.
I know Mark's recommendations on dress for interviews, and I'm wondering if we're being too demanding in expecting more respect for the interview panel and the position they are applying for?
For a candidate that otherwise gave a great interview, how should I consider this aspect? Would you give input to the candidates about their attire when it's time to let them know whether they got the job?