Impulsivity and drugs of abuse: A juice-reinforced operant procedure for determining within-session delay discounting functions in rhesus monkeys

This delay discounting procedure is sensitive to both behavioral and pharmacological manipulations and appears to be particularly sensitive to chronic drug treatment and drug withdrawal. Given the importance of drug dependence and withdrawal in the initiation, maintenance of, and relapse to drug taking, this procedure should be useful to study one aspect of this process.