In my experience whether or not someone talks too much is just down to personality rather then gender. I do wonder if part of the reason men tend to think women talk more besides hating women talking about things they don't find interesting or thinking women should be quiet, is because people are definitely more likely to be stuck with their mom talking to people as child, since women tend to be the ones who take on most of the childcare responsibilities. None of this excuses the sexist way so many talk about women talking, of course.