Abstract
Two experiments with rats as subjects investigated whether massive extinction can attenuate the renewal effect. Experiment 1 investigated whether moderate or massive extinction could prevent the return of conditioned responding following Pavlovian conditioning in Context A, extinction in Context B, and subsequent testing in Context C (i.e., ABC renewal). Experiment 2 examined whether massive extinction could prevent renewal following training in Context A, extinction in Context B, and testing in Context A (i.e., ABA renewal). Both experiments observed attenuated renewal following massive, but not moderate extinction. Results are discussed in terms of contemporary theories of extinction.
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