title: Perceptions of credibility of treatment and placebo by treated and quasi-control subjects.
mesh_terms: D001007:Anxiety / Q000628:therapy*; D001521:Behavior Therapy; D003887:Desensitization, Psychologic; D006801:Humans; D010043:Outcome and Process Assessment, Health Care; D011613:Psychotherapy; D011617:Psychotherapy, Rational-Emotive