Caffeine reinforcement demonstrated in a majority of moderate caffeine users

A mutually exclusive choice procedure was used to evaluate the reinforcing effects of caffeine in eleven normal subjects with histories of regular caffeine consumption (mean 256 mg/day). Subjects participated for 24 weeks; each week consisted of three consecutive daily sessions (two sampling days fo...

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Veröffentlicht in:	Behavioural pharmacology 1994-06, Vol.5 (3), p.231-238
Hauptverfasser:	Evans, S M, Critchfield, T S, Griffiths, R R
Format:	Artikel
Sprache:	eng
Online-Zugang:	Volltext
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