Excerpt from The British Journal of Psychology, 1913, Vol. 5 Experiments were begun in the Psychological Laboratory at Cam bridge in the summer of 1909, with the same apparatus and by the same method as were used by Dawes Hicks and Rivers'. The horizontal-vertical figure was exposed for a fraction of a second on a ground-glass screen. The subject, seated at a convenient distance, was warned of the coming exposure and was allowed to express his judgment in any of these forms - Vertical (or horizontal) much greater, Vertical greater, Vertical greater or equal, Equal. Any constraint Of the subject's attention towards one particular line was avoided by leaving him quite free to refer either to the horizontal or the vertical line in expressing his judgment. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.