Abstract
Eleven mixtures of Noyes sucrose and standard food pellets were used as discriminative stimuli to control responding under a multiple fixed-ratio 30 fixed-interval 2 min. schedule of reinforcement. In rats, response rates following each pellet concentration were controlled by the presence of the larger proportion of sucrose or standard food. Loss of discriminative control occurred when pellets composed of .50 sucrose and .50 standard food preceded the schedule components. Discrimination reversals developed when the pellet concentration of the original training food was less than .50.
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This investigation was supported by Grants 01-6379 and 01-6391 from the Research Committee of the University of South Alabama. The valuable advice of Dr. John deLorge is gratefully acknowledged.
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Vitulli, W.F. Stimulus properties of varied food concentrations. Psychon Sci 9, 495–496 (1967). https://doi.org/10.3758/BF03327855
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DOI: https://doi.org/10.3758/BF03327855