PART I.— HISTORY AND ORGANIZATION OF PSYCHOLOGICAL EXAMINING AND THE MATERIALS 



OF EXAMINATION. 



Page. 



Chapter 1. Preofficial period of preparation for national service 7 



2. Official military trial of psychological examining , 11 



3. Period of extension of examining 27 



4. General summary 91 



5. Provision of materials for psychological examining 120 



PART II.— METHODS OF EXAMINING: HISTORY, DEVELOPMENT, AND PRELIMINARY RESULTS. 



Chapter 1. Work of the committee at Vineland, N.J 299 



2. Unofficial trial of methods 313 



3. Acceptance of methods by the War Department and early modifications resulting from official use. 325 



4. Revision of group examination a 327 



5. Methods of segregation 347 



6. Development of a substitute group test for illiterates and foreigners 363 



7. Data obtained through more extensive camp trial of examination beta and resulting modifications. 379 



8. Revision of methods of individual examination 397 



9. Effect of doubling the time limits in the alpha and beta examinations 415 



10. The assignment of letter ratings 421 



11. Performance in intelligence examinations as related to officers' estimates of intelligence 425 



12. Performance in intelligence examinations as related to military efficiency 453 



13. Conditions of examining and procedure adopted during the initial experiment 469 



14. Summary of data concerning groups examined 487 



15. Additional statistics on examination a 533 



PART III— MEASUREMENTS OF INTELLIGENCE IN THE UNITED STATES ARMY. 



Chapter 1. Sampling of intelligence records and mode of analysis 553 



2. A general method of statistical interpretation of the principal sample 573 



3. Comparison of forms of examination alpha 659 



4. Camp differences in intelligence ratings 665 



5. Intelligence ratings by states 681 



6. Relation of intelligence ratings to nativity 693 



7. Relation of intelligence ratings to length of residence in United States 701 



8. Intelligence of the negro 705 



9. Literacy 743 



10. Statistics on education and its relation to intelligence examinations 747 



11. Intelligence of the draft in relation to fitness for military service 785 



12. Disciplinary cases 799 



13. Influence of certain physical conditions on the intelligence score 809 



14. Relation of intelligence ratings to age 813 



15. Intelligence ratings of occupational groups 819 



16. Relation of ratings to arm of the service 839 



17. Relation of rank to intelligence 853 



18. Officers' training camps and noncommissioned officers' schools 861 



19. Data from colleges and the Students' Army Training Corps 869 



20. Distribution of scores on the tests in examinations alpha and beta 873 



Subject Index 877 



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