1. The prediction of placebo response in anxious and depressed outpatients;Downing,1970
2. Non-specific factors in treatment: I. Review of placebo reactions and placebo reactors;Honigfeld;Dis. nerv. Syst.,1964
3. Non-specific factors in treatment: II. Review of social-psychological factors;Honigfeld;Dis. nerv. Syst.,1964
4. Why patients leave psychotherapy;Frank;AMA Archs Neurol. Psychiat.,1957
5. Dropout from outpatient psychiatric treatment: “Personality” and situational determinants;Freedman;AMA Archs Neurol. Psychiat.,1958