Synopses & Reviews
THE MEASUREMENT of J ADULT INTELLIGENCE BT DAVID WECHSLER Chief Psychologist, Bellevue Psychiatric Hospital. Assistant Clinical Professor of Medical Psychology, New York University College of Medicine. Lecturer, School of Education, New York University. THIRD EDITION BALTIMOKE THE WILLIAMS WILKINS COMPANY 1944 COPYRIGHT, 1944 DAVID WECHSLER Made in the United States of America First Edition, April, 1939 Second Edition, October, 1941 Reprinted, February, 1943 Third Edition, April, 1944 Reprinted, April, 1945 COMPOSED AND PRINTED AT THE WAVERLY PRESS, INC. FOB THE WILLIAMS WILEINS COMPANY BALTIMORE, MD., U. S. A. TO FREDA KB281946 PREFACE TO THIRD EDITION In preparing this third, war edition of the Measurement of Adult Intelligence my primary aim has been to increase the books usefulness to those engaged in the field of applied psychometrics. I have borne in mind particularly the military applications of the Wechsler-Bellevue Scale, as it is now being used by some of the armed services of our own country as well as of Great Britain. Accordingly, most of the changes made will be found in the chapters dealing with Clinical applications and the Problem of mental deterioration. These chapters have been somewhat extended and in part rewritten. The table of signs for different clinical entities has been completely revised and a new quan titative method for determining mental deterioration elaborated. Both of these presentations should be of value not only in the field of neuro psychiatric diagnosis but also in questions connected with rehabilitation. In addition to the above, some changes have been made in the scoring of certain subtests of the Scale. The effect of these changes will be toincrease the I. Q. range at the upper end of the Scale, without however altering significantly the norms for the population as a whole. In the case of one or two tests noticeably, the Arithmetic the change has necessitated slight alteration in the scoring of some of the subtest items. Little alteration has otherwise been made in the substance of the text. One table and two figures which were not particularly useful have been omitted and two new tables which should be of immediate and practical value added. Also added is a bibliography of most of the important studies with the Wechsler-Bellevue Scale, published up to March 1944. For editorial perusal of the text I am indebted to Miss Ventura Smith, psychologist, to the Westport, Conn., public schools, who not only read the page proofs but was also kind enough to prepare a new index. DAVID WECHSLER. April, 1944 CONTENTS PART I THE NATUKE AND CLASSIFICATION OF INTELLIGENCE 1 Chapter 1. Nature of Intelligence 3 Chapter 2. Need for an Adult Intelligence Scale 13 Chapter 3. Concepts of Mental Age and I. Q 19 Chapter 4. Classification of Intelligence 36 Chapter 5, Concept of Mental Deficiency 49 Chapter 6. The Problem of Mental Deterioration 54 PART II THE BELLEVUB INTELLIGENCE SCALES 71 Chapter 7. Selection and Description of Tests 73 Chapter 8. Population used in Standardizing Tests 102 Chapter 9. Standardization and Results 116 Chapter 10, Limitations and Special Merits 136 Chapter 11. Diagnostic and Clinical Features 146 PART III MANUAL OF BELLEVUE INTELLIGENCE TESTS 169 APPENDICES 219 I. Q. TABLES 229 INDEX 255 PART THE NATURE AND CLASSIFICATION OF INTELLIGENCE