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Abstract

Rats received training in which two auditory target stimuli, X and Y, were signaled by two visual stimuli, A and B, and followed by food (i.e., A→X1, B→Y+). The test consisted of presentations of X and Y preceded either by the same signal as during training (same trials: A→X, B→Y) or by the alternative signal (different trials: A→Y, B→X). After 8 training sessions, the animals responded less on same trials than on different trials; this effect was significantly reduced after 24 training sessions. In two additional experiments, animals that had also experienced presentations of A and B alone, either before or during training, showed the opposite pattern of results, responding more on same trials than on different trials. These results are interpreted as being due to the interaction between the effects of occasion setting andnegative priming (see Wagner, 1981).

Publication Type:	Article
Additional Information:	This is a post-peer-review, pre-copyedit version of an article published in Animal Learning & Behavior. The final authenticated version is available online at: http://dx.doi.org/10.3758/BF03195989.
Publisher Keywords:	Unconditioned Stimulus, Trial Type, Negative Priming, Pavlovian Conditioning, Animal Behavior Process
Subjects:	B Philosophy. Psychology. Religion > BF Psychology
Departments:	School of Science & Technology > Computer Science
SWORD Depositor:	Symplectic Administrator

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