title: Pavlovian conditioning of drug reactions: some implications for problems of drug addiction.
mesh_terms: D003214:Conditioning, Classical; D006801:Humans; D009021:Morphine Dependence; D010551:Personality; D010600:Pharmacology; D011603:Psychophysiology; D012054:Reinforcement, Psychology; D013375:Substance Withdrawal Syndrome / Q000209:etiology; D019966:Substance-Related Disorders