Ocular dominance: a test of two hypotheses.

Fifty subjects were given a battery of eye dominance tests to investigate whether there are five types (Lederer, 1961) or two types (Walls, 1951) of ocular dominance, and to investigate the relation between these tests and handedness. There was no evidence in support of either classification, or of any correlation between the preferred eye and the preferred hand. An alternative hypothesis to those formulated by Lederer and by Walls is presented, which seems to account more adequately for the results.