Excerpt from Manual of Mental and Physical Tests, Vol. 1: Simpler Processes; A Book of Directions Compiled With Special Reference to the Experimental Study of School Children in the Laboratory or Classroom Opportunity has been taken of this necessity for a new edition to make extensive revision and alterations in the text. The attempt has been made to eliminate a number of confusing typographical errors; a new and better system of abbreviations for titles of periodicals has been introduced; the directions for conducting the tests have been modified where ambiguity was felt; numerous tables and graphs have been added; the section upon the treatment of measures has been expanded; and sev eral new tests have been inserted. These changes have so increased the material as to make it desirable to divide it into two parts, the first dealing with simpler, the second with more complex processes. The numbering of the original tests has, however, been retained for various reasons. 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.