Alpha females

There is a recent research that shows that women who take a masculine approach in workplace are paid higher than their nicer counterparts (And surprisingly, it seems men's pockets are barely affected by such personality traits). Most of us would be aware of this even before the research.Do we women have to exhibit some kind of split personality coz what is expected of women in family life is the be-nice personality, very different from what is expected in workplace? Hope it is jus a for the phase of transition when more women have started working. Let the expectation of split personality in women end soon!