Sorry, I didn't mean to imply that only women are disadvantaged, though I wrote much too hastily.
What the data shows is that between two groups with very different hand size distributions, the one with (on average) larger hands has a tremendously easier time playing. So, while some people will argue hand span is a secondary factor, in fact there is a critical need for smaller keyboards.
What the data shows is that between two groups with very different hand size distributions, the one with (on average) larger hands has a tremendously easier time playing. So, while some people will argue hand span is a secondary factor, in fact there is a critical need for smaller keyboards.