<p>Marlgirl, I decided to be a physicist at the age of 9 (despite living in a blue-collar neighborhood with none of the adults were professionals and few of them had gone to college), majored in physics, earned a Ph.D. at HYP, and am now a researcher on the faculty of one of the above. In my view, physics is a great career for women because for the most part the field is a meritocracy, and most physicists are fair and ethical people. I haven’t looked into the reasons that there aren’t more women in physics, but I have a few ideas based on experience. First, as other posters have mentioned, many, if not most, women in physics have attended all-female high schools or colleges. Years ago, I knew a female mathematician who asked every woman mathematician, physicist, or engineer about this. Every one of the women she asked had gone to an all-female high school or college (this was in the dark ages, when there were still quite a few all-female colleges). I went to an all-girls HS. Something else that I’ve noticed is that females go into physics only if they have extraordinary ability, while males become physicists with less talent. I once read a column in Physics Today by Leon Lederman. He wrote about being asked by a male college student, who loved physics but who was a mediocre student, whether he should go to grad school and become a physicist. I was shocked that Lederman had encouraged this man; I’d assumed that only those with great aptitude had a chance of a successful career. Lederman wrote that many important discoveries had been made by physicists of average ability, because persistence and serendipity played at least as large a role as ability. </p>
<p>I read one of the Wisconsin articles linked above. What I have found is that although there are people who will discriminate against women, they are in the minority and there are plenty of others who will help anyone. I know very good women physicists who have had to leave institutions because of a hostile atmosphere, and who succeeded in other places. But I think you will find this to a greater extent in other professions - law, business, medicine.</p>
<p>Family responsibilities are a real issue - again, it is possible to thrive in some departments, but not in others where people are not supportive. </p>
<p>I don’t agree with ADad’s ideas about assertive, obstinate personalities being suitable for physics. I am a very collegial person, and I think this has been as important for my career as any abilities that I have. In general, most people I’ve known in physics are open-minded and supportive of others. I have found that the few aggressive, nasty physicists have abilities much lower than the norm. I have only met one physicist who was both highly talented and nasty, and he had an exceptionally deprived childhood.</p>
<p>Very few scientists work alone these days, and the ability to work well with others is crucial. Traditional female personality traits are actually an advantage.</p>