BEHAVIORAL CONTRAST IN RATS WITH DIFFERENT REINFORCERS AND DIFFERENT RESPONSE TOPOGRAPHIES1
- 1 November 1975
- journal article
- research article
- Published by Wiley in Journal of the Experimental Analysis of Behavior
- Vol. 24 (3) , 267-280
- https://doi.org/10.1901/jeab.1975.24-267
Abstract
Experiment I demonstrated positive behavioral contrast in rats when one of two qualitatively different reinforcers (milk and pellets) was removed from a component of a multiple schedule. The contrast effect was larger and more enduring when milk was removed. Experiment II showed that the rats spent more time on the side of a shuttle-box on which milk was freely available than on the side on which pellets were freely available. Experiment III, a partial replication of Experiment I, failed to demonstrate the contrast effect of Experiment I. Experiment IV demonstrated contrast when two topographically distinct responses, nose-key poking and lever pressing, were required in different components of a multiple schedule. These results extend the conditions that generate behavioral contrast in rats.Keywords
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