Abstract
Six groups of rats were run in a straight alley. Groups were given 46 trials to large (L) or small (S) reward. This was followed by multiple shifts so that groups given reinforcement patterns LLLL, LSSL, SLSL, SSSS, SLLS, and LSLS were formed. A significant PCE was achieved on the second and third shifts to L. In extinction, groups terminating in L were least resistant to extinction.
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Capaldi. E. J. Reinforcement level: An expectancy-associative approach to relative reinforcement and nonreinforcement effects. Arlington Symposium on Learning, University of Texas at Arlington. February 1975.
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McCain, G., Cooney, J. PCE I: The effects of three reward magnitude shifts. Bull. Psychon. Soc. 6, 523–526 (1975). https://doi.org/10.3758/BF03337557
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DOI: https://doi.org/10.3758/BF03337557