title: The effects of pharmacological and environmental variables on drug choice in rhesus monkeys [proceedings].
mesh_terms: D000818:Animals; D002755:Choice Behavior; D003216:Conditioning, Operant; D003657:Decision Making; D000882:Haplorhini; D006801:Humans; D007275:Injections, Intravenous; D008253:Macaca mulatta; D012054:Reinforcement, Psychology; D012646:Self Administration; D019966:Substance-Related Disorders