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Subjects are presented with a set of stimuli and must classify those stimuli into one of two categories. In a common version known as the "weather prediction task" the stimuli are cards with geometric shapes on them and the outcomes are rainy versus sunny weather. The feedback is probabilistic, and performance is measured by the proportion of statistically optimal responses.
Synonyms: probabilistic classification learning task, weather prediction task
Definition contributed by RPoldrack about three years ago

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Probabilistic classification task has been asserted to measure the following CONCEPTS



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IMPLEMENTATIONS of Probabilistic classification task
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EXTERNAL DATASETS for Probabilistic classification task
Dataset #1 Classification learning
Dataset #2  Classification learning and stop-signal (1 year test-retest)
CONTRASTS

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.

INDICATORS

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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Term History

REVISION 1

Definition contributed by RPoldrack about four years ago:Subjects are presented with a set of stimuli and must classify those stimuli into one of two categories. In a common version known as the "weather prediction task" the stimuli are cards with geometric shapes on them and the outcomes are rainy versus sunny weather. The feedback is probabilistic, and performance is measured by the proportion of statistically optimal responses.

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Term Bibliography

Long-term test-retest reliability of functional MRI in a classification learning task.
Aron AR, Gluck MA, Poldrack RA
NeuroImage (Neuroimage)
2006 Feb 1
Citation added by NPicchetti about one year ago
Citation Profile

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