The effectiveness of inhibitors in human predictive judgments depends on the strength of the positive predictor |
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Authors: | Email author" target="_blank">Danielle?M?KarazinovEmail author Robert?A?Boakes |
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Institution: | School of Psychology, University of Sydney, Sydney, New South Wales, Australia. dannyk@psych.usyd.edu.au |
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Abstract: | We tested whether the development of inhibitory strength, as measured by a summation test, is proportional to the strength
of the positive cue (P) against which the inhibitory cue (I) is trained. P predicted the outcome, whereas the co-occurrence
of P with I (PI) predicted no outcome. In Experiments 1, 2, and 3, we compared the latter design against a version in which
P was overshadowed by another cue (X). In this design, the compound PoX predicted the outcome, but PoIo predicted no outcome. In all three experiments, overshadowed cue Io was less inhibitory than I. In Experiment 4, a P produced by fewer training trials also supported weaker inhibitory learning.
Overall, the results were consistent with associative learning theories, especially Pearce’s (1994) configural model. Contingency
models need to make additional assumptions to accommodate this property of inhibitory learning. |
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Keywords: | |
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