230 EMPLOYMENT PSYCHOLOGY many occupations require a certain ability in filing. To discover something of an applicant’s ability in this direction, he may be placed before an assortment of files and parts and be asked to do one or more pieces of filing. The files which he picks up and the manner in which he handles them will be a token to the expert of his ability in this respect. Naturally, it cannot be expected that these devices and tests for choosing and rating applicants can be perfect or final. Not until the worker is actually engaged at his task and confronted with definite and unexpected prob lems will his genuine ability and experience be fully dis played. The logical step after those which have now been described is a period of approval, during which the new worker is given actual work and closely observed under conditions of normal activity. However, this phase of employment must be left for another discussion. In the meanwhile, the methods suggested if carefully worked out and conscientiously applied, will greatly facilitate both the classification and the rating of applicants before they are turned into the larger organization. And in. working out the technique for a procedure covering these phases of employment, the psychologist can be of great value to the experts who will be required to work out the details of the demonstration and the questions to be asked. For the psychologist, aside from his knowledge of the work ings of the mind, is familiar with the requirements of an exact technique such as will be essential if these phases of employment are to be placed upon a sound and scientific basis. When the questions to be asked an applicant are given the careful attention and experimental study de scribed, then the answers obtained will have a genuine value.