Excerpt from A Course in Experimental Psychology, Vol. 1: Sensation and Perception Most of the experiments are demonstrational in char acter, and aimed at qualitative rather than quantitative results, even when for convenience they have been given a quantitative form. Precautions necessary for results of the latter sort have therefore been lightly touched upon. The setting of the experiments is generally the simplest, and the apparatus the least expensive, that promised satis factory results. That no mistakes have been made, even from these points of view, is more than I can hope. I have been careful in the selection, however, and let the book pass from my hands with the hope that it may prove helpful both to those who have psychological courses to give and to those who shall by and by supplant it by a better one. 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.