Blocking in eyelid conditioning: Effect of changing the CS-US interval and introducing an intertriai stimulus |
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| Authors: | Robert T Maleske Peter W Frey |
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| Institution: | 1. Department of Psychology, Northwestern University, 60201, Evanston, Illinois
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| Abstract: | Kamin’s three-stage blocking paradigm was investigated in rabbit eyelid conditioning, Two manipulations were examined. A change in the CS-US interval from Stage 1 to Stage 2 did not attenuate blocking. The introduction of a salient stimulus during the intertriai interval in Stage 2 also failed to attenuate blocking. The first result is not consistent with Kamin’s interpretation of the blocking effect in terms of US surprisingness. The second resuit is inconsistent with a prediction based on the Rescorla-Wagner model. |
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