Nonreinforced exposure to a nontarget stimulus that was followed by nonreinforced exposure to a target/nontarget simultaneous compound stimulus resulted in enhanced latent inhibition of the target. Conditioning was slower after this treatment than after nonreinforced exposure to the target stimulus alone (Experiment 1). However, a salient auditory stimulus presented immediately after the compound in the second phase reduced levels of latent inhibition, relative to the enhanced latent inhibition produced when no such extracompound stimulus was presented (Experiments 2 and 3). This effect was not noted if the salient auditory cue was presented 10 sec after the termination of the compound stimulus (Experiment 4). In Experiment 5, there was no disruption of simple latent inhibition produced by a salient stimulus. These results are consistent with enhanced latent inhibition’s being produced by the formation of within-compound associations, which are disrupted by the salient extracompound stimuli.
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These data were presented at the Experimental Analysis of Behaviour Group Meeting, London, 1998. Thanks are due Amanda Roberts and Julie DeJongh for help with collection of the data and Lisa A. Osborne for her comments and support.
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Reed, P., Tsakanikos, E. The influence of a distractor during compound preexposure on latent inhibition. Animal Learning & Behavior 30, 121–131 (2002). https://doi.org/10.3758/BF03192914
- Latent Inhibition
- Compound Stimulus
- Nontarget Stimulus
- Elevation Ratio
- Latent Inhibition Effect