Language has the power to structure and change thought and behavior, where there exists a belief in this positive power of language. Magic is curative because the language of magic has a powerful suggestive effect on the human mind familiar with the context in which this language is used. In psychotherapy, the special terminology is a vital part of therapy. The language of Transactional Analysis, for example, represents the belief, shared by patient and therapist, that destructive behavior can be identified and changed; therefore, this language assists in the modification of behavior. Therapy techniques developed for working with drug addicts also rely on special language which helps separate the addict from his destructive patterns of behavior and form a new self-image. Ineffective communication patterns can be identified by carefully listening to the words a person uses to describe his experiences and relationships. Grinder and Bandler's therapy involves a kind of meta-language which helps the patient recognize the way he views himself and his environment. (Author/AM)