First of all, I don't doubt that women are sometimes treated with less respect than man in our field. Part of the reason I left my last job was the rampant casual sexism. Shame on us.

With that said, when a woman is interrupted, how often is that due to sexism?

My girlfriend and I are in our thirties but we used to speak like college aged children. When we improved our speech, we noticed that people treat us with more respect. I know a large number of engineers, both male and female and in various age groups, who could benefit from Toastmasters or a speech coach.

As for men who interrupt, I hate you, you make the work environment worse and you need a lesson in basic etiquette.