title: Dynamics of drug dependence. Implications of a conditioning theory for research and treatment.
mesh_terms: D003214:Conditioning, Classical; D003216:Conditioning, Operant; D003213:Conditioning, Psychological; D004361:Drug Tolerance; D006556:Heroin Dependence / Q000628:therapy; D006801:Humans; D008962:Models, Theoretical; D009021:Morphine Dependence; D009892:Opium; D011582:Psychological Theory; D012008:Recurrence; D012054:Reinforcement, Psychology; D012056:Reinforcement, Social; D012106:Research; D019966:Substance-Related Disorders / Q000517:prevention & control / Q000534:rehabilitation / Q000628:therapy
chemical_list: D009892:Opium