Most of the time you can find out just by looking at their home, or by showing picture examples and asking them to choose preferences. Most people will have preferences towards one or the other.
But, then there are always some who prefer a mix. Symmetry with something to throw things off.
How about you? Do you prefer one or the other? Or do you like a good mix?
Images: Unknown, Unknown, Unknown, Thornton Designs, Unknown, Sarah Richardson, Elle Decor, Unknown, Country Living