Generally speaking, new male drivers will go too fast in a corner or steer too much, or try to brake too far into the corner. Basically, they over drive. For them learning slow in fast out is beneficial because it helps in these three areas.
Generally, new female drivers will take more of an average speed through the whole course. Not going full throttle in the straights and going too fast in the corners. Again, learning Slow In, Fast Out helps with this as well.