PSYC 351 Lecture Notes - Lecture 26: Classical Conditioning
8 Apr 2020
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If a cs has acquired excitatory properties, there will be an overexpectation of the us the first time the cs+ is. Repeated nonreinforced presentations of the cs+ will result in progressive reduction of the associative value of. At the start of extinction, the cs- has negative associative value (underprediction of the. Less than the zero us that occurs on extinction trials). To align expectations with the absence of the us, the negative associative value of the cs- is gradually reduced. And the cs- ends up with zero associative strength. Its analysis of the extinction of conditioned inhibition is not correct. Views extinction as the reverse of acquisition, or the return of the associative value of a. Early theories postulated a single attentional mechanism about what determines how much attention a cs. More recent attention theories assume that there are several different forms of attention relevant to learning and.
