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Podlesnik, Christopher A.; Jimenez-Gomez, Corina; Woods, James H. – Journal of the Experimental Analysis of Behavior, 2010
The goal of this series of experiments was to develop an operant choice procedure to examine rapidly the punishing effects of intravenous drugs in rats. First, the cardiovascular effects of experimenter-administered intravenous histamine, a known aversive drug, were assessed to determine a biologically active dose range. Next, rats responded on…
Descriptors: Positive Reinforcement, Drug Use, Animals, Punishment
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Shull, Richard L.; Grimes, Julie A. – Journal of the Experimental Analysis of Behavior, 2006
Rats obtained food-pellet reinforcers by nose poking a lighted key. Experiment 1 examined resistance to extinction following single-schedule training with different variable-interval schedules, ranging from a mean interval of 16 min to 0.25 min. That is, for each schedule, the rats received 20 consecutive daily baseline sessions and then a session…
Descriptors: Training, Positive Reinforcement, Intervals, Animals