The Right Brain vs Left Brain test

Introducing Betty the Ballarina. She's a famous old girl:


The question: Do you see Betty turning clockwise or anti-clockwise?

If clockwise, then you use more of the right side of the brain, the creative side.
If counter-clockwise, then you use the left side of the brain, the logical side.

Most would see the dancer turning anti-clockwise though some people can focus and change the direction with practice. For the first 10 minutes I could only see her turning clockwise, and thought it impossible how she could be going any other direction. Guess I'm more an artist than a scientist after all. After slowing the animation down, I could manage to switch between rotations after a few tries. This is an actual test, I've checked the gif frame-by-frame there's no trick to it.

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