When, on April 6, 1917, the Nation was called to war a group of experimental psychologists promptly assembled to consider means of psychological service. As plans of action developed the size of this group, its opportunities and responsibilities, steadily increased. The materials of this report represent the methods and results of only the field of psychological examining.
This volume constitutes a complete account of the history, methods, and results of psychological examining in the United States Army. It consists of three parts. Part I is the official history of the development of the service and of its conduct during the war. It is supplemented by reproductions of the printed materials which were devised and used. Part II is devoted to a complete account of the preparation of methods, their characteristics, and their evaluation as practical procedures. In Part III the results of examining are presented in summary fashion. - Summary by Robert M. Yerkes
Chapters
1 General Introduction 7 min 2 I. Introduction to Part 1. Preofficial period of preparation for national Service 18 min 3 II. Official military trial of psychological examining 1 h 12 min 4 III. Period of extension of examining. Part 1 1 h 12 min 5 III. Period of extension of examining. Part 2 1 h 8 min 6 III. Period of extension of examining. Part 3 1 h 2 min 7 III. Period of extension of examining. Part 4 50 min 8 III. Period of extension of examining. Part 5 54 min 9 IV. General Summary. Part 1 1 h 2 min 10 IV. General Summary. Part 2 1 h 8 min 11 V. Provision of materials for psychological examining. Part 1 5 min 12 PART II. METHODS OF EXAMINING: HISTORY, DEVELOPMENT, AND PRELIMINARY RESULTS. I. Work of the Committee at Vineland, N. J 59 min 13 II. Unofficial Trial of Methods 33 min 14 III. Acceptance of Methods by the War Department and early Modifications Resulting From Official use 7 min 15 IV. Revision of Group Examination a 51 min 16 V. Methods of segregation 35 min 17 VI. Development of a Substitute Group Test for Illiterates and Foreigners 54 min 18 VII. Data Obtained Through More Extensive Camp Trial of Examination Beta and Resulting Modifications 51 min 19 VIII. Revision of Methods of Individual Examination 50 min 20 IX. Effect of Doubling the Time limits in the Alpha and Beta Examinations 18 min 21 X. The Assignment of Letter Ratings 15 min 22 XI. Performance in Intelligence Examinations as Related to Officers Estimates of Intelligence 49 min 23 XII. Performance in Intelligence Examinations as Related to Military Efficiency 35 min 24 XIII. Conditions of Examining and Procedure Adopted During the Initial Experiment 1 h 12 min 25 XIV. Summary of Data Concerning Groups Examined 1 h 14 min 26 XV. Additional Statistics on Examination a 21 min 27 PART III. MEASUREMENTS OF INTELLIGENCE IN THE UNITED STATES ARMY. Introduction 3 min 28 I. Sampling of intelligence records and mode of analysis 54 min 29 II. A general method of statistical interpretation of the principal sample 1 h 1 min 30 III. Comparison of forms of examination alpha 6 min 31 IV. Camp differences in intelligence ratings 11 min 32 V. Intelligence ratings by States. VI. Relation of intelligence ratings to nativity. VII. Relation of intelligence ratings to length of residence in United States 15 min 33 VIII. Intelligence of the negro 38 min 34 IX. Literacy 8 min 35 X. Statistics on education and its relation to intelligence examinations 22 min 36 XI. Intelligence of the draft in relation to fitness for military service 26 min 37 XII. Disciplinary cases 21 min 38 XIII. Influence of certain physical conditions on the intelligence score 8 min 39 XIV. Relation of intelligence ratings to age 12 min 40 XV. Intelligence ratings of occupational groups 39 min 41 XVI. Relation of ratings to arm of the service 12 min 42 XVII. Relation of rank to intelligence 8 min 43 XVIII. Officers' training camps and noncommissioned officers' schools 8 min 44 XIX. Data from colleges and the Students' Army Training Corps. XX. Distribution of scores on the tests in examinations alpha and beta 7 min