Typologies based on experience patterns
Type theory has been notably favorable to an exaggerated emphasis on heredity , even when no explicit assumptions are made regarding the organized personality structure , with closely interdependent systems, there would naturally be associated an emphasis on the unchanging character of this organization. Following this argument backward in time, we inevitably arrive at a theory of hereditary determination.
A few writers have, however, propounded type theories which stressed organizations crystallized by experience and henceforward changeable only by major outside intervention, e.g., psychoanalytic theory of anal-erotic, oral-erotic, and genital types.