Abstract
In each of two investigations, rats ran in a runway to obtain varying quantities of food pellets presented in a fixed order, such as 20-0-20. The major finding was that rats ran faster on a 0-pellet trial if that trial was followed shortly by a 20-pellet trial (e.g., 20-0-20 series) than if it was not (e.g., 20-0 series). This finding was obtained both within groups (Experiment 1) and between groups (Experiment 2), and suggested that the memory of 20 pellets arising from the first trial of the 20-0-20 series was retrieved not only on the second trial of the series, thereby signaling 0 pellets, but on the third trial as well, thereby also signaling 20 pellets. Retrieving the memory of 20 pellets on Trial 3 of the 20-0-20 series apparently resulted in that memory’s elevating speed on Trial 2 of that series.
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This research was supported by NSF Grant BSN 80-01171 to E. J. Capaldi.
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Capaldi, E.J., Verry, D.R. & Nawrocki, T.M. Multiple hedonic memory: Memory for more than one hedonic event in rats. Animal Learning & Behavior 10, 351–357 (1982). https://doi.org/10.3758/BF03213721
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DOI: https://doi.org/10.3758/BF03213721