Effect of extended training on generalization of latent inhibition: an instance of perceptual learning |
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| Authors: | Rodríguez Gabriel Alonso Gumersinda |
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| Institution: | (1) Facultad de Psicolog?a, Universidad del Pa?s Vasco, Avenida de Tolosa 70, 20018 San Sebasti?n, Spain |
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| Abstract: | Four experiments examined generalization of latent inhibition (LI) as a function of the length of preexposure in a conditioned
taste aversion procedure with rats. Experiment 1 showed that one or four nonreinforced presentations of a flavor compound (BX) retarded subsequent conditioning to another
compound (AX). However, after eight presentations of BX, conditioning to AX occurred at the same rate as with no preexposure.
These results indicate that generalization of LI decreased as the length of preexposure to BX increased. Experiment 2 replicated this effect of reducing generalization, as well as demonstrating that LI actually increased as the length of preexposure
to AX increased. Experiment 3 extended the generality of the effect to a procedure in which both BX and AX were preexposed. Experiment 4 demonstrated a similar reducing-generalization effect when generalization of LI from BX to X was assessed. All of these data
are consistent with the notion that prolonged preexposure to BX enhances its discriminability. Different learning mechanisms
that might be responsible for this perceptual learning effect are discussed. |
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| Keywords: | |
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