Journal Article10.1080/09658210042000021
Contextual dependencies in predictive learning
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TL;DR: Two experiments assessed contextual dependencies in a predictive-learning task and found the response latency was slower on switched trials than on same trials in each experiment, extending previous findings on the effect of environmental contextual stimuli on task performance.
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Abstract: Two experiments assessed contextual dependencies in a predictive-learning task. Subjects learned to associate each of four pictorial stimuli with the occurrence or non-occurrence of a specific outcome. Each of these stimuli, the intentional stimuli, was presented against one of two different visual (Experiment 1) or auditory (Experiment 2) context stimuli. These context stimuli were incidental: subjects were not explicitly instructed to pay any attention to them and each of them in isolation was not predictive of the outcome. During acquisition and testing, subjects expressed the expected relationship between intentional stimulus and outcome by an appropriate key press. At test, intentional stimuli were presented either with the same contextual stimulus as also present during acquisition (same trials), or with the other one (switched trials). The response latency was slower on switched trials than on same trials in each experiment, a result extending previous findings on the effect of environmental contex...
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Citations
All we need is a cue to remember: the effect of an extinction cue on renewal.
TL;DR: It was demonstrated that the extinguished expectancy of an aversive outcome was renewed when the CS was presented outside the extinction context and that an extinction cue attenuated this effect and only transferred its inhibitory properties to other, non-extinguished stimuli when there was no contextual switch.
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•Book
Computational Models of Conditioning
Nestor A. Schmajuk
- 21 Oct 2010
TL;DR: The complexity of the models frequently results in function redundancy, a natural property of biologically evolved systems that is much desired in technologically designed products as mentioned in this paper, which makes computer simulations irreplaceable.
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Changes in the incidental context impacts search but not loading of the motor buffer.
TL;DR: Data from the present experiment support the contention that contextual information plays a fundamental role in a broad array of movement–planning operations that involve search and retrieval type activity.
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Contextual dependencies in a stimulus equivalence paradigm
TL;DR: Results were discussed in the framework of switch costs, habituation to contextual stimuli, and a model based on Shea and Wright (1995) that explains the differential influence of a context switch on easy versus difficult tasks.
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