When I was an undergrad in college, I helped design a study on the role of gender perception in expertise. We had a piece of text that the subjects (undergrads) would read and rate the expertise of. We had the same text but we randomized whether the name would be a commonly male name, a commonly female name, or initials. We also randomized if they'd watch a clip of men's sports beforehand (men's basketball), women's…
It’s one thing to observe a pattern in a certain subset of people. However, why do you think there is this apparent bias or perception? If there is a bias, is it good, bad, or neutral? Are there biases in other directions?
Bias isn’t inherently good or bad - they are normative judgements of distance from rationality.
Some biases are probably evolutionary advantageous to the individual but harmful to the society or others.
Sticking with the group is great, except when it isn’t, for example.
Or, a “gut check” is great, but you can’t always make decisions based on your gut: