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Ward, Ryan D.; Bailey, Ericka M.; Odum, Amy L. – Journal of the Experimental Analysis of Behavior, 2006
This experiment assessed the effects of "d"-Amphetamine and ethanol on reinforced variable and repetitive key-peck sequences in pigeons. Pigeons responded on two keys under a multiple schedule of Repeat and Vary components. In the Repeat component, completion of a target sequence of right, right, left, left resulted in food. In the Vary component,…
Descriptors: Animals, Control Groups, Drug Use, Reinforcement
Odum, Amy L.; Ward, Ryan D. – Journal of the Experimental Analysis of Behavior, 2004
Recent experiments suggest that the effects of drugs of abuse on the discrimination of the passage of time may differ for experimenter-imposed and subject-produced events. The current experiment examined this suggestion by determining the effects of morphine on the discrimination of interresponse times (IRTs). Pigeons pecked a center key on a…
Descriptors: Responses, Drug Abuse, Intervals, Animals