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This is an instantiation of the Ultimatum Game (UG) in fMRI. In this game, a proposer is charged with splitting a sum of money with a partner. The responder decides either to accept or reject this proposed offer. If accepted, the money is split as suggested, but if rejected then neither player receives anything. The parterns can be a combination of real people, computers. Offers are preceded by a picture of the partner for that round, and partner pictures are randomly paired to an offer amount. Full details of the task are available:

Definition contributed by Anonymous
social bargaining fMRI task has been asserted to measure the following CONCEPTS
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Phenotypes associated with social bargaining fMRI task


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IMPLEMENTATIONS of social bargaining fMRI task
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Experimental conditions are the subsets of an experiment that define the relevant experimental manipulation.


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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).


Great expectations: neural computations underlying the use of social norms in decision-making.
Chang LJ, Sanfey AG
Social cognitive and affective neuroscience (Soc Cogn Affect Neurosci)
2013 Mar