title: Drugs, behavior, and environmental sources of motivation: bridging a gap.
authors.affiliation: University of Waterloo.
authors.forename: M
authors.initials: M
authors.lastname: Vogel-Sprott
mesh_terms: D000339:Affect; D000437:Alcoholism / Q000523:psychology; D016739:Behavior, Addictive / Q000503:physiopathology / Q000523:psychology*; D004361:Drug Tolerance; D006801:Humans; D007858:Learning; D009042:Motivation; D012054:Reinforcement, Psychology; D019966:Substance-Related Disorders / Q000503:physiopathology / Q000523:psychology*