The bigger picture
Why is it not possible to just accept that some jobs (I'd hardly call IT a profession, any more) are more attractive to men and others are more attractive to women? We don't hear much talk about getting more women working on building sites, plumbing or lorry driving (though obviously there are some who do these jobs) and we hear even less about getting more men into nursing and teaching. Maybe there's a gender-bias in all these gender-bias studies?
The best that the world can do is make sure there is no gender-based discrimination (explicit or subtle) that bars entry into any of these careers and then let people make up their own minds. If they prefer to get their rewards by caring for others - or by producing some bug-ridden code, 3 months late - then so be it. So long as the choice is there and available to everyone who has the qualifications, there's little more to do.
When was the last time you heard anyone say there was a "problem" because not enough men got secretarial jobs?