The most significant "barriers" probably have to do with social norms and gender roles. Gender roles have a real affect on preference. So while it might not,

The most significant "barriers" probably have to do with social norms and gender roles. Gender roles have a real affect on preference. So while it might not, though it might, be that biology plays a significant role in whether or not females show interest in CS gender roles certainly DO. It's very backwards to me to be focusing so much on the work environment and employers themselves for ways to attract female CS employees when those people don't even exist in the work force in the numbers desired. Or the pipeline for that matter.