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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.
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).
Definition contributed by NPicchetti about six years ago:Is a feedback-driven learning task. 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.REVISION 1
Definition contributed by NPicchetti about six years ago:No definition submitted yet.View Term Event Log
Aron AR, Gluck MA, Poldrack RA
2006 Feb 1
Citation added by NPicchetti about four years ago