Drug preference in normal volunteers: Ef
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H. Wit; E. H. Uhlenhuth; C. E. Johanson
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Article
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1985
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Springer
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English
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These experiments assessed the influence of two variables, age of subjects and time of drug administration, on the reinforcing properties of amphetamine and of diazepam in normal volunteers. Three groups of subjects were tested: i) a group of 40-55-year-old subjects (AGE group; N = 11) who were test