Jonathan Wai notices a double standard:
I'll be the first to admit that my math skills are worse than when I was in the seventh grade. That's probably why I ended up as a psychologist rather than a mathematician. However, I don't think being willing to admit you are bad at math is limited to lawyers and psychologists, it's pretty much everyone. In fact, I've noticed that it's quite socially acceptable to say that I'm not good at math. On the other hand, I would never admit that I was bad at reading because, well, that would just make me look really stupid.
Which clearly raises the question: Why is it socially acceptable to say that you're bad at math but not socially acceptable to say you're bad at reading?
Maybe because math is useless to the vast majority of us.