It is well-known that the majority of humans have left-right preferences when using their hands or feet. But it is perhaps less well-known that the same can be true for our eyes and ears.

I once heard of a simple test to check whether I was left-eyed or right-eyed. In a room, quickly turn your head to look up to a corner where the ceiling meets the two walls. Then close each eye in turn, and you should find that only one eye is aimed straight at the corner.

I have no idea how reliable this test is, or how strongly people tend to prefer one eye to the other. But assuming there's something in it, I wonder whether anyone knows of (or can devise) a similarly simple test for the ears?