37° EMPLOYMENT PSYCHOLOGY to memory to help him remember them for the next occa sion. The psychologist, as we have seen, may begin in the same way, by imagining a situation or a number of possible situations and then working out a set of directions for the test accordingly. However, once the work of his imagination is complete he may give these directions twenty or fifty different times and in the course of this work he may change the structure of a sentence at one time, the turn of a phrase at another, the position of a word, of a comma, or of an accent. He may make innu merable changes before he arrives at a set of directions which meet, with a reasonable degree of success, the varying viewpoints and ideas of a large number of indi viduals. In other words, he is not satisfied to obtain another’s viewpoint by imagination or guesswork alone, but must try out his assumptions by means of careful experiments in order to find out how they work in actual practice. The recognition of self-esteem and self-interest and their corollaries, courtesy and fair play, is still further devel oped in the individual-activity record. The fundamental qualities of the individual can not be properly gauged or recognized as long as the task is left to the uncertain and capricious judgment of ordinary human beings, whether they be gang bosses or general managers. The individual- activity record is largely an impersonal and objective record of the history of a worker. The items in this his tory are various, but they all contribute to the estimate of the total value of that individual both in the eyes of his employer and in his own eyes. Where such a record is kept the worker who esteems himself and is confident in his abilities need not fear that some caprice on the part of his superior will be able to oust him from his position.