Bloomberg says yes.
...since we have no idea what everyone else is earning, we tend to feel insecure about what we are making. We look around us and assume that others are earning much more. The chances are that we get a salary somewhere in the middle. If we were more open, we’d probably be pleasantly surprised, and realize we are doing OK. Our self-esteem would improve.
Sex Tops Salary In Quest To Lift Taboos [Bloomberg]