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Use of Samples Differing Markedly in Salience May Encourage Use of a Single-Code/Default Strategy in Matching-to-Sample in Pigeons
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Grant, Douglas S. – Learning and Motivation, 2009
To test the hypothesis that pigeons will only code the more salient sample when samples differ markedly in salience, pigeons were trained with samples consisting of a 2-s presentation of food (highly salient sample) and an 8-s presentation of keylight (less salient sample). During retention testing, pigeons tended to respond at longer delays as if…
Descriptors: Conditioning, Animals, Animal Behavior, Experiments
Asymmetrical Sample Training and Asymmetrical Retention Functions in One-to-One and Many-to-One Matching in Pigeons
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Grant, Douglas S. – Learning and Motivation, 2006
Pigeons were trained in a matching task with either color (group color-first) or line (group line-first) samples. After asymmetrical training in which each group was initially trained with the same sample on all trials, marked retention asymmetries were obtained. In both groups, accuracy dropped precipitously on trials involving the initially…
Descriptors: Retention (Psychology), Animals, Cognitive Processes, Animal Behavior
Sources of Retroactive Inhibition in Pigeon Short-Term Memory
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Grant, Douglas S.; Roberts, William A. – Journal of Experimental Psychology: Animal Behavior Processes, 1976
A delayed matching-to-sample (DMTS) task was used to test several hypotheses about sources of retroactive inhibition (RI) in pigeon short-term memory. (Editor)
Descriptors: Animal Behavior, Charts, Experimental Psychology, Inhibition
An Analysis of Light-Induced Retroactive Inhibition in Pigeon Short-Term Memory
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Roberts, William A.; Grant, Douglas S. – Journal of Experimental Psychology: Animal Behavior Processes, 1978
Grant and Roberts found that houselight presented throughout the delay period on a delayed matching-to-sample task caused pigeons to demonstrate a much lower level of accuracy than was found when the delay was spent in darkness. A series of experiments was carried out to examine possible mechanisms responsible for this light-induced retroactive…
Descriptors: Animal Behavior, Experimental Psychology, Experiments, Hypothesis Testing