title: Drug self-administration in humans.
mesh_terms: D000328:Adult; D001143:Arousal / Q000187:drug effects; D003913:Dextroamphetamine / Q000494:pharmacology; D003975:Diazepam / Q000494:pharmacology; D004053:Diethylpropion / Q000494:pharmacology; D004644:Emotions / Q000187:drug effects; D005260:Female; D006801:Humans; D008297:Male; D010919:Placebos; D012646:Self Administration; D019966:Substance-Related Disorders / Q000523:psychology
chemical_list: D010919:Placebos; D003975:Diazepam; D004053:Diethylpropion; D003913:Dextroamphetamine