PSYC 2330 Lecture Notes - Lecture 6: Leon Kamin, Classical Conditioning

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Conditioned stimuli that have the negative symbol in the subscript describe predictors that the biologically relevent stimuli will not be received: aversive stimuli are just as important. Contingency: the cs must not only be contiguous with a us, how close together the cs and us occur. In the random contingency, phi = 0 because the us is as likely to occur in the presence of the. In the perfect predictor, phi = 1 because the us only occurs in the presence of the cs. In partial predictor situations, phi varies depending on the accuracy of the cs"s ability to predict the us. Contingency is calculated as a difference between: a is correct (question is available on course link) Positive contingency: us more probable when cs is on. Cr: this experiment is important because it shows that, 1. Conditioning is not an automatic result of cs-us pairings: 2.