Pick a side.

Via delicategeniusblog, who snagged it from news.com.au.

If the dancer above appears to you to be spinning clockwise, you use primarily your right brain; if counterclockwise, you are a left brain thinker.

According to the other two places I stole this from, most people see it turning counterclockwise, and some can change the direction by focusing.

No matter what I do, it just spins clockwise for me. I guess I'll never be able to do math. Or remember to put nipples on my spinning figures.

LEFT BRAIN FUNCTIONS uses logic detail oriented facts rule words and language present and past math and science can comprehend knowing acknowledges order/pattern perception knows object name reality based forms strategies practical safe

RIGHT BRAIN FUNCTIONS uses feeling “big picture” oriented imagination rules symbols and images present and future philosophy & religion can “get it” (i.e. meaning) believes appreciates spatial perception knows object function fantasy based presents possibilities impetuous risk taking