The Right Brain vs Left Brain test ... do you see the dancer turning clockwise or anti-clockwise?

If clockwise, then you use more of the right side of the brain and vice versa.

Most of us would see the dancer turning anti-clockwise though you can try to focus and change the direction; see if you can do it.

Tony
I see the dance - turning clockwise for a while and then she gets a bit confused and starts turning anti-clockwise. Its the shadows at the bottom that stay constant whether her foot is nearer or away the direction of the movement of the shadow is constant. Nice try - but its an optical trick - nothing to do with which side of the brain you use.

n=5 (2 male and 3 female)

Of the 2 men, one saw it clockwise the other anti-clockwise
Of the 3 women, 1 saw it clockwise but the other 2 saw it changing and going both ways.

If there is a L-R difference, I would suggest that it right siders don't see the changes and that left siders do.

After spending a little more time on this, we got the right siders to see the direction changes but it did require framing of the image using the hands. ie. Hold out your hands about 40cm in front of you, crossing the thumbs and with the rest of the fingers flat and vertical, so that there is a vertical frame left and right of the image. Now, watching the rotating image move the "frame" towards and away from your head.

Now you can see the changes (if you couldn't before).