The effects of two nonpharmacological variables on drug preference in humans.
D000328:Adult; D000661:Amphetamine / Q000494:pharmacology*; D001007:Anxiety / Q000523:psychology; D003975:Diazepam / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D004644:Emotions / Q000187:drug effects; D006801:Humans; D011581:Psychological Tests; D019966:Substance-Related Disorders / Q000523:psychology*
D000661:Amphetamine; D003975:Diazepam