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Participants are trained on the relative likelihood of receiving a reward on a set of images,"stimuli," and a set of button presses, "actions," and learn action-reward probabilities and stimulus-reward probabilities (pS) separately by performing pairwise choices between two randomly selected alternatives from each set. Choosing the better or worse of the two options gives positive or negative feedback (smiley and sad faces). For the actual task, participants performed a three-option choice task in which each option comprised one previously learned stimulus and one previously learned action. They are instructed to weight stimulus and action information equally on each trial and select the best option to obtain points that subsequently converted into monetary reward. This summarized text, and full details are available:
Definition contributed by VSochat about two years ago

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multi-attribute reward-guided decision task has been asserted to measure the following CONCEPTS

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DISORDERS associated with multi-attribute reward-guided decision task
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EXTERNAL DATASETS for multi-attribute reward-guided decision task
Dataset #1 Hierarchical competitions subserving multi-attribute choice
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Experimental conditions are the subsets of an experiment that define the relevant experimental manipulation.


In the Cognitive Atlas, we define a contrast as any function over experimental conditions. The simplest contrast is the indicator value for a specific condition; more complex contrasts include linear or nonlinear functions of the indicator across different experimental conditions.

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An indicator is a specific quantitative or qualitative variable that is recorded for analysis. These may include behavioral variables (such as response time, accuracy, or other measures of performance) or physiological variables (including genetics, psychophysiology, or brain imaging data).

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Hierarchical competitions subserving multi-attribute choice.
Hunt LT, Dolan RJ, Behrens TE
Nature neuroscience (Nat Neurosci)
2014 Nov
Citation added by VSochat about two years ago
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