MEASURE YOUR MIND _The Mentimeter and How to Use It_ BY M. R. TRABUE, PH. D. AND FRANK PARKER STOCKBRIDGE [Illustration] WITH ILLUSTRATIONS IN TEXT GARDEN CITY, NEW YORK, TORONTO DOUBLEDAY, PAGE & COMPANY 1922 COPYRIGHT, 1920, BY DOUBLEDAY, PAGE & COMPANY ALL RIGHTS RESERVED, INCLUDING THAT OF TRANSLATION INTO FOREIGN LANGUAGES, INCLUDING THE SCANDINAVIAN PRINTED IN THE UNITED STATES AT THE COUNTRY LIFE PRESS, GARDEN CITY, N. Y. ------------------------------------------------------------------------ PREFACE The publishers offer this book primarily as a popular treatise on the measurement of intelligence by scientific methods. Every effort has been made to conform to the soundest scientific principles, both in the preparation of the Mentimeter tests, around which the volume is largely written, and in the introductory and explanatory chapters, in which the principles of applied psychology, as they bear upon mental tests, are stated in popular language. The Mentimeters are based upon Doctor Trabue’s experience (1) as Assistant in Educational Psychology at Teachers College, Columbia University, (2) as psychological investigator of the intellectual status of inmates of charitable institutions and of pupils in the public schools, (3) as author of various intellectual and educational scales, widely used by psychologists and educators, (4) as Chief Psychological Examiner in two of the largest Army camps, directing the intellectual examination of more than a hundred thousand soldiers, (5) as Captain in the Adjutant General’s Department, U. S. Army, measuring the intellectual abilities of men in the Aviation Service, and (6) as Assistant Professor in Columbia University, giving instruction in the theory and practice of intellectual measurements and directing the application of such measurements to tens of thousands of school pupils.