[Liz C]

I wouldn't necessarily claim that upbringing has to do with it. By the time a person reaches high school age, they are most likely able to decide what clubs they want to join strictly based on what they like or what they are good at. And some guys can insecure/stereotypical about the whole robotics idea and its supposed "dorkiness" too. In the whole scheme of things, it wasn't that long ago until women started entering the field of science, let alone engineering, and I've noticed (even though its not entirely true) that robotics is associated with just engineering. Perhaps this assumed relationship has something to do with it...