Psychoanalysis, while stimulating an interest in diagnosing and treating emotionally disturbed children, soon found its techniques and approaches had to be modified if they were to be used effectively with children. The child could not become an adult in order to be effectively psychoanalyzed. Consequently, the analyst had to go to the child. The importance of play and toys as an analytical tool was recognized. However, it was many years before successful analytic play techniques were established. A variety of active and passive forms of analytical play therapy continue to flourish.Relationship therapy emphasized the present rather than the past, and stressed the importance of the dynamic relationship between the therapist and the patient. As a result, a method of child treatment soon developed from relationship therapy. The postulates of relationship therapy were rapidly absorbed into nondirective therapy. Nondirective beliefs place therapeutic reliance upon the person himself. Nondirective therapy was immediately useable as a form of play therapy. Its original postulates remain unchanged.The development of play in child therapy was an inevitable process, for play therapy, no matter on which therapeutic theory it is based, provides the child with a natural avenue of approach to the therapist. He is enabled to calmly and without embarrassment reveal his ideas, emotions, wishes, attitudes, and fantasies to the therapist. Therapeutic play behavior enables the child to immediately release socially unacceptable impulses and aggressive behavior. He may discharge his feelings without fear of being censured or punished. Such a secure emotional discharge serves to quickly reduce the child's anxiety, enabling him to move safely on to therapeutic experiences.