Heretofore most of psychologic testing consisted in the use of tests and measurements to determine intellectual ability, ability to acquire school knowledge. Such tests, however, neglected such important points as degree of interest displayed by an individual in acquiring knowledge, degree of personal adjustment or development of certain character traits.

In order to place an individual in a field of activity for which he may be best fitted and where he may produce the maximum desired results it is not sufficient to test his intelligence or ability in general, but he must be tested for certain traits of personality which are specially desirable for specific lines of activity, and such traits must be tested and measured not