Abstract
In four experiments, the once daily availability of saccharin (.15%) preceded the availability of sucrose (32% or 2%). Experiment 1 showed that the intake of saccharin was reduced when it preceded 32% sucrose but not when it preceded 2% sucrose, as compared with saccharin-alone conditions. Experiment 2 showed that less saccharin was consumed when the saccharin preceded sucrose by 5 min than when there was a 30-min intersolution interval. Experiment 3 replicated this finding and showed that the presentation of the two solutions through the same or different access holes in the apparatus was not relevant to the result. Experiment 4 showed that there was an inverse relationship between saccharin intake and the length of the intersolution interval in the range of 1 to 30 min. These data were interpreted to indicate that the animals learn the predictive relationship between the saccharin and sucrose solutions and that the intake of the saccharin is reduced by an anticipatory contrast mechanism—a mechanism that may have restricted temporal parameters.
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Flaherty, C. F., & Checke, S.Anticipatory contrast in rats. Paper presented at the meeting of the Psychonomic Society, St. Louis, November 1980.
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This research was supported by a grant from the Rutgers Research Council.
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Flaherty, C.F., Checke, S. Anticipation of incentive gain. Animal Learning & Behavior 10, 177–182 (1982). https://doi.org/10.3758/BF03212267
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DOI: https://doi.org/10.3758/BF03212267