Abstract
Rats were trained to lick either 32% or 4% sucrose solutions for 5 min per day. Following 10 days of acquisition training, the 32% rats were shifted to the 4% solution. A negative contrast effect was found with a 1-day but not with a 32-day retention interval interposed between the shift phases. An attempt to reinstate the memory of the 32% solution in the 32-day retention condition prior to the first postshift test failed to affect postshift licking behavior.
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Supported by a Biological Sciences support grant and a grant from the Rutgers Research Council to the second author. This paper is sponsored by Norman Spear, who takes editorial responsibility for its contents.
A National Institute of Mental Health predoctoral fellow.
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Gordon, W.C., Flaherty, C.F. & Riley, E.P. Negative contrast as a function of the interval between preshift and postshift training. Bull. Psychon. Soc. 1, 25–27 (1973). https://doi.org/10.3758/BF03333327
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DOI: https://doi.org/10.3758/BF03333327