Not exactly photography related but definitely on topic about creativity in general.
This link is to an interesting test for whether you are right brained or left brained:
Apparently, if you concentrate, you can see the dancer change from anti-clockwise to clockwise. I apparently lack that ability and in fact only see her going clockwise which indicates that I am right brained. I guess I should be satisfied that I can see her spin at all because that might indicate that I have no brain!