Expectancy and phobic level: effects on desensitization.
D000818:Animals; D001521:Behavior Therapy / Q000379:methods*; D003887:Desensitization, Psychologic / Q000379:methods*; D006801:Humans; D010565:Persuasive Communication; D010698:Phobic Disorders / Q000523:psychology / Q000628:therapy*; D012718:Set, Psychology; D012911:Snakes