title: Role of expectancy manipulation in systematic desensitization.
mesh_terms: D001521:Behavior Therapy; D003071:Cognition; D003887:Desensitization, Psychologic / Q000379:methods; D005239:Fear; D005246:Feedback; D006801:Humans; D010698:Phobic Disorders / Q000628:therapy; D012063:Relaxation; D013112:Spiders