Yesterday I attended a seminar and I noticed that at least 75% of the audience were women. The speaker was a man, and so was the person who introduced the speaker*. After the talk, there was time for a couple questions and the three people who asked something were men.
Overall score: a room full of women and all the people who opened their mouth to speak were men.
I know what it is like to be in an audience, and wonder if the question you might have is one worth asking. The time to make this decision is short and before you know it someone else asks their questions or the time is up for anyone to ask a question. But my advisor encouraged us in a somewhat strange way to ask questions: after the speaker was finished, she would point at one of her grad students and say:"now you have to ask something.". The first time this happened to me I was obviously caught off guard and was barely able to utter something resembling a question. Yikes. But the next time, I knew this could happen to me and ever since, I've trained myself to just have some questions ready in my head to ask. This may seem ridiculous, because if you don't have something to ask, why try and come up with something. But to me, it's been good training in coming up with good (and sometimes not so good) questions. So that when a talk ends, I don't have to hesitate, but I can put my hand up and ask something. Sometimes because I actually want to know the answer, and sometimes to be visible to the speaker or others in the audience.
Do you see the same? That women are less likely to ask questions? And if so, what do you do encourage them to ask something?
*I had never before seen someone so good at highlighting his own achievements while introducing someone else by the way. A remarkable skill in itself.