Abstract
Data were obtained with rats on the effects of interresponse time (IRT) contingent reinforcement of the lever press response using schedules in which two intervals of reinforced IRTs were associated with two different stimulus light intensities (S+ values) and reinforcement was withheld in the presence of an intermediate intensity (S−). When the reinforcement intervals were the same for the two S+ values, the response rates were essentially the same for all three stimulus intensities; however when the reinforcement intervals were different, the response rates in the presence of S− were sometimes intermediate and sometimes lowest. The height of the mode of the IRT distributions was consistently lowest for the distributions obtained in S−.
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This research was supported by Public Health Service Grant MH-06911-01.
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Malott, R., Cumming, W. A note on multiple schedules of IRT reinforcement. Psychon Sci 2, 259–260 (1965). https://doi.org/10.3758/BF03343438
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DOI: https://doi.org/10.3758/BF03343438