title: Drugs and placebos: drug guessing by normal volunteers.
mesh_terms: D000328:Adult; D000661:Amphetamine / Q000494:pharmacology*; D002707:Chlordiazepoxide / Q000494:pharmacology*; D003913:Dextroamphetamine / Q000494:pharmacology; D004192:Discrimination, Psychological; D004644:Emotions / Q000187:drug effects*; D005260:Female; D006801:Humans; D008297:Male; D010919:Placebos; D012631:Secobarbital / Q000494:pharmacology*; D012649:Self Concept / Q000187:drug effects*
chemical_list: D010919:Placebos; D012631:Secobarbital; D002707:Chlordiazepoxide; D000661:Amphetamine; D003913:Dextroamphetamine