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  • Title: Effects of retention interval on latent inhibition and perceptual learning.
    Author: Killcross AS, Kiernan MJ, Dwyer D, Westbrook RF.
    Journal: Q J Exp Psychol B; 1998 Feb; 51(1):59-74. PubMed ID: 9532962.
    Abstract:
    Repeated, non-reinforced preexposure to a context slowed development of conditioned freezing to that context when it was subsequently paired with footshock (latent inhibition) and enhanced discriminability of that context from a similar context (perceptual learning) whether assessed by a generalization test or by explicit discrimination training. Latent inhibition was eliminated by a delay between conditioning sessions and test (Experiments 1a and 1b) and reduced by a delay between preexposure and conditioning (Experiment 2). However, perceptual learning was unaffected by either of these intervals (Experiments 1b and 2). These results are discussed in terms their impact on theories that have latent inhibition as a possible mechanism of perceptual learning, and on theories of latent inhibition that consider the retardation of conditioned responding to be the result of an acquisition failure.
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