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Overshadowing and associability change.

JONES, Peter M and Haselgrove, Mark (2011) Overshadowing and associability change. Journal of experimental psychology. Animal behavior processes, 37 (3). pp. 287-99. ISSN 1939-2184

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Abstract or description

Three appetitive Pavlovian conditioning experiments with rats examined the associability of stimuli A and B that had a history of compound conditioning (AB+), relative to stimuli X and Y that had a history of conditioning in isolation (X+, Y+). Following this training, Experiment 1 revealed that conditioned responding was higher to X and Y than to A and B (overshadowing). In a subsequent AY+, AX-, BY- test discrimination, the AY/BY discrimination was solved more readily than the AY/AX discrimination. In Experiment 2, following AB+, X+, Y+ training, A and Y were presented as a compound and signaled the availability of reinforcement upon the performance of an instrumental response. Test trials in which A and Y were presented alone, and in extinction, revealed that A acquired greater control of instrumental responding than Y. Experiment 3 revealed that following AB+, X+, Y+ training, A and B served as more effective discriminative stimuli for instrumental responding than X and Y. Overall, these results imply that the associability of stimuli conditioned in compound is higher than stimuli conditioned in isolation. These results are discussed in terms of attentional theories of associative learning.

Item Type: Article
Subjects: C800 Psychology
Faculty: Faculty of Health Sciences > Psychology, Sport and Exercise
Depositing User: Peter JONES
Date Deposited: 05 Feb 2013 19:09
Last Modified: 05 Feb 2013 19:09
URI: http://eprints.staffs.ac.uk/id/eprint/345

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