Produced by Audrey Longhurst, Laura Wisewell and the Online Distributed Proofreading Team at https://www.pgdp.net RIVERSIDE TEXTBOOKS IN EDUCATION EDITED BY ELLWOOD P. CUBBERLEY PROFESSOR OF EDUCATION LELAND STANFORD JUNIOR UNIVERSITY DIVISION OF SECONDARY EDUCATION UNDER THE EDITORIAL DIRECTION OF ALEXANDER INGLIS PROFESSOR OF EDUCATION HARVARD UNIVERSITY THE MEASUREMENT OF INTELLIGENCE AN EXPLANATION OF AND A COMPLETE GUIDE FOR THE USE OF THE STANFORD REVISION AND EXTENSION OF _The Binet-Simon Intelligence Scale_ BY LEWIS M. TERMAN PROFESSOR OF EDUCATION LELAND STANFORD JUNIOR UNIVERSITY [Illustration] HOUGHTON MIFFLIN COMPANY BOSTON NEW YORK CHICAGO SAN FRANCISCO The Riverside Press Cambridge COPYRIGHT, 1916, BY LEWIS M. TERMAN ALL RIGHTS RESERVED The Riverside Press CAMBRIDGE · MASSACHUSETTS PRINTED IN THE U.S.A. To the Memory OF ALFRED BINET PATIENT RESEARCHER, CREATIVE THINKER, UNPRETENTIOUS SCHOLAR; INSPIRING AND FRUITFUL DEVOTEE OF INDUCTIVE AND DYNAMIC PSYCHOLOGY EDITOR'S INTRODUCTION The present volume appeals to the editor of this series as one of the most significant books, viewed from the standpoint of the future of our educational theory and practice, that has been issued in years. Not only does the volume set forth, in language so simple that the layman can easily understand, the large importance for public education of a careful measurement of the intelligence of children, but it also describes the tests which are to be given and the entire procedure of giving them. In a clear and easy style the author sets forth scientific facts of far-reaching educational importance, facts which it has cost him, his students, and many other scientific workers, years of painstaking labor to accumulate.