Well, when you take those IQ tests, they have the spatial reasoning problems with the dice and such...or the cube that has been unfolded and has different symbols on each side and you have to say which of the cubes pictured would result from folding up that sheet. Those never gave me much trouble. But the more complicated ones, the dodecagons and the like, were really hard. That should give some indication of how many different things you can visualize. All depends on the person naturally.