ABSTRACT
Personality is described by saying people has or has not got certain symptoms or that certain personality characteristics, as described in terms of common speech, are or are not strongly developed. A hypothesis or theory about personality formation is validated by the truth of its predictions about the way a given personality will develop and appear at a given moment. In regard to types there are really two problems. To show that the parts of the pattern really do go together, and to show that a sufficient number of people fall into the type to make it worth using. In psychology there has been a perhaps too facile and premature theorization about personality without sufficient attention to the acid test of prediction and control. Some clear analysis is necessary before psychologists can advance to more exact treatment of the actual business of personality description.
