Abstract
Three experiments are reported in which the intertrial interval (ITI) of six preexposure (PE) trials was varied in a latent inhibition (LI) paradigm using rats and a one-trial fear conditioning task. No effect of the ITI was obtained in any experiment. However, at all ITIs tested, LI was obtained when the to-be-conditioned stimulus and the conditioned stimulus were of long duration (15 sec), and LI was not obtained when such stimuli were of short duration (3 sec). These results are interpreted in terms of a new hypothesis of latent inhibition.
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Supported in part by the small grants program of Central Washington University.
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DeVietti, T.L., Barrett, O.V. Latent inhibition: No effect of intertrial interval of the preexposure trials. Bull. Psychon. Soc. 24, 453–455 (1986). https://doi.org/10.3758/BF03330581
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DOI: https://doi.org/10.3758/BF03330581