The Director of the Committee was a civilian, a university professor and specialist in psychology who had won distinction by his ability to give that science practical and fruitful application in daily life. Its work was so varied and so well developed in all its phases that it is possible to give here only the barest resume of its achievements. By the methods it devised all the men who entered a cantonment, after they had passed their physical examinations, underwent psychological tests to determine the speed and accuracy of their mental actions, the quality of their native intelligence and the extent of its development. Then they passed on to interviewers who examined and classified them according to their education and training, their occupations and degree of skill. Afterward came trade tests to discover whether or not the men had truly reported their occupations and ability. These trade tests and the methods of their application, as finally developed, were the result of much work and investigation by the Committee that had brought in the services of psychological experts, employment experts, statisticians and others. Their purpose was to procure a dependable record of the special ability of every soldier who possessed any kind of skill that would serve any one of the army’s varied needs. Every army unit must have specialists of several kinds and in an army that had to be built up at high speed it was necessary to find these specialists among its numbers. Bitter experience developed the fact, very soon, that the account of themselves which the men gave in answer to the questions of the interviewers frequently could not be depended on and the trade tests, which were of three kinds, oral, picture and performance, were devised to meet this necessity quickly and easily.