Adler's Individual Psychology is an ego psychology. One of its bases is adaptation leading to goal-directed striving for mastery or superiority. Heredity, instincts, and environment are not seen as determining personality; they are only the building materials the child used to construct his unique personality. Man therefore strives freely for his progress rather than being a slave to his instincts. Another basis of Adler's psychology is man's social nature, which totally permeates his thinking, feeling, willing, and acting.Abstract Teaser