I think it goes further than that. I've seen smart women I know do the same thing with me (and I'm female and a coder) -- like suddenly acting as though they're idiots when they've already proved it isn't true. I think it speaks for a gutwrenching lack of confidence, some of these people are OK with learning skills but don't actually believe in their own ability to apply them.
What they need probably is a mix of more attention, a kick up the bum, and being encouraged to go and help other people who are less progressed (because that will actually build their confidence.)
What they need probably is a mix of more attention, a kick up the bum, and being encouraged to go and help other people who are less progressed (because that will actually build their confidence.)