JUST TRY!...:)

If you see the woman turning clockwise, the right hemisphere of your brain (which processes intuitively, holistically, and randomly) is dominant,

 However, if you see her turning counter-clockwise, the left hemisphere of your brain (which is the seat of language and processes in a logical and sequential order) dominates,

Some people can see the movement both ways, which are supposed to have high IQ levels.